In 1968 a new conversion of the GM design appeared when the doors on many wagons were replaced and the GMD class was created. Like the GMs these wagons were rapidly phased out once wagonload traffic ended.

1968	15402, 15403, 15409, 15415, 15416, 15417, 15421, 15423, 15424, 15425, 15427, 15428, 15430, 15431, 15436, 15442, 15444, 15451, 15456, 15460, 15461, 15467, 15468, 15469, 15470, 15471, 15472, 15475, 15477, 15478, 15483, 15487, 15490, 15492, 15493, 15494, 15496, 15500, 15506, 15509, 15511, 15516, 15523, 15526, 15529, 15532, 15533, 15534, 15535, 15538, 15541, 15543, 15550, 15551, 15553, 15555, 15556, 15558, 15560, 15561, 15563, 15564, 15568, 15569, 15571, 15575, 15576, 15577, 15579, 15581, 15582, 15586, 15590, 15593, 15595, 15596, 15599, 15600, 15602, 15603, 15604, 15607, 15609, 15610, 15617, 15619, 15623, 15624, 15630, 15632, 15634, 15636, 15637, 15640, 15641, 15642, 15643, 15647, 15654, 15655, 15656, 15660, 15664, 15665, 15667, 15671, 15672, 15673, 15675, 15677, 15678, 15679, 15682, 15686, 15688, 15690, 15692, 15694, 15696, 15699, 15700, 15703, 15705, 15706, 15708, 15712, 15718, 15721, 15724, 15725, 15726, 15727, 15731, 15733, 15735, 15736, 15737, 15738, 15740, 15741, 15743, 15746, 15747, 15748, 15751, 15752, 15756, 15758, 15761, 15765, 15768, 15771, 15772, 15775, 15779, 15780, 15783, 15784, 15786, 15787, 15788, 15792, 15794, 15798, 15799, 15800, 15801, 15803, 15805, 15810, 15811, 15814, 15816, 15817, 15826, 15827, 15831, 15834, 15841, 15843, 15844, 15845, 15848, 15849, 15855, 15856, 15857, 15863, 15866, 15868, 15871, 15873, 15875, 15876, 15877, 15880, 15883, 15885, 15889, 15890, 15894, 15895, 15897, 15899, 15900, 15903, 15905, 15906, 15912, 15915, 15918, 15919, 15924, 15927, 15930, 15931, 15932, 15933, 15934, 15937, 15941, 15943, 15946, 15950, 15959, 15964, 15965, 15967, 15968, 15970, 15972, 15974, 15975, 15976, 15977, 15981, 15982, 15990, 15993, 15994, 15996, 15997, 15998, 15999, 16000, 16003, 16004, 16005, 16009, 16013, 16015 converted from GM
1970	15912 written off
1971	13321, 15412, 15419, 15433, 15434, 15437, 15438, 15441, 15445, 15448, 15452, 15459, 15463, 15465, 15466, 15473, 15481, 15489, 15495, 15497, 15498, 15499, 15503, 15504, 15505, 15510, 15517, 15530, 15537, 15539, 15548, 15554, 15562, 15567, 15573, 15574, 15583, 15587, 15589, 15591, 15592, 15597, 15601, 15606, 15612, 15614, 15616, 15618, 15625, 15629, 15650, 15657, 15674, 15683, 15689, 15701, 15702, 15713, 15750, 15757, 15778, 15782, 15822, 15836, 15846, 15847, 15852, 15854, 15861, 15862, 15865, 15874, 15887, 15888, 15891, 15904, 15908, 15914, 15916, 15917, 15926, 15928, 15939, 15945, 15949, 15952, 15954, 15955, 15957, 15958, 15960, 15962, 15969, 15971, 15985, 15986, 15992, 15995, 16006, 16007, 16016 converted from GM
1972	15641, 15678, 15930, written off
1973	15637, 15943 written off
1976	15425, 15459, 15741, 15801 written off
1977	15496, 15696, 15976 written off
1979	15598 converted from GM 15641 written back 15437, 15534, 15541, 15575, 15586, 15664, 15701, 15779, 15780, 15782, 15957, 15974 written off
1980	15438, 15841, 15922 written off
1981	15444, 15477, 15783, 15844, 15862 written off
1983	15911 converted from GM 15436, 15461, 15619, 15686, 15788, 15903, 15918 written off
1984	15416, 15523, 15560, 15854, 16009 written off
1985	15415, 15417, 15421, 15424, 15427, 15452, 15456, 15463, 15467, 15478, 15495, 15500, 15511, 15558, 15574, 15579, 15581, 15582, 15617, 15624, 15642, 15674, 15699, 15705, 15713, 15718, 15721, 15743, 15756, 15784, 15843, 15849, 15856, 15861, 15876, 15877, 15889, 15904, 15905, 15955, 15994, 15995 written off
1986	15402, 15442, 15468, 15494, 15504, 15505, 15509, 15567, 15571, 15587, 15595, 15606, 15640, 15667, 15672, 15689, 15712, 15724, 15736, 15746, 15761, 15765, 15778, 15787, 15798, 15805, 15811, 15822, 15834, 15836, 15873, 15880, 15888, 15894, 15899, 15915, 15917, 15926, 15934, 15946, 15952, 15954, 15959, 15969, 15970, 15985, 15998, 16004, 16005, 16013, 16016 written off
1987	15428, 15441, 15471, 15475, 15487, 15548, 15596, 15655, 15657, 15671, 15725, 15583, 15590, 15607, 15726, 15771, 15799, 15810, 15857, 15863, 15924, 15931, 15950, 15968 written off
1989	15431, 15433, 15448, 15451, 15469, 15481, 15492, 15493, 15543, 15553, 15556, 15561, 15563, 15573, 15609, 15616, 15660, 15673, 15679, 15692, 15703, 15740, 15748, 15757, 15758, 15775, 15786, 15814, 15826, 15827, 15855, 15865, 15871, 15891, 15895, 15900, 15906, 15908, 15928, 15939, 15958, 16006, 16007 written off
1990	13321, 15403, 15409, 15412, 15419, 15423, 15430, 15434, 15445, 15460, 15465, 15466, 15470, 15472, 15473, 15483, 15489, 15490, 15497, 15498, 15499, 15503, 15506, 15510, 15516, 15517, 15526, 15529, 15530, 15532, 15533, 15535, 15537, 15538, 15539, 15550, 15551, 15554, 15555, 15562, 15564, 15568, 15569, 15576, 15577, 15589, 15591, 15592, 15593, 15597, 15598, 15599, 15600, 15601, 15602, 15603, 15604, 15610, 15612, 15614, 15618, 15623, 15625, 15629, 15630, 15632, 15634, 15636, 15641, 15643, 15647, 15650, 15654, 15656, 15665, 15675, 15677, 15682, 15683, 15688, 15690, 15694, 15700, 15702, 15706, 15708, 15727, 15731, 15733, 15735, 15737, 15738, 15747, 15750, 15751, 15752, 15768, 15772, 15792, 15794, 15800, 15803, 15816, 15817, 15831, 15845, 15846, 15847, 15848, 15852, 15866, 15868, 15874, 15875, 15883, 15885, 15887, 15890, 15897, 15911, 15914, 15916, 15919, 15927, 15932, 15933, 15937, 15941, 15945, 15949, 15960, 15962, 15964, 15965, 15967, 15971, 15975, 15977, 15981, 15982, 15986, 15990, 15992, 15993, 15996, 15997, 15999, 16000, 16003, 16015 written off

The WAGR outline diagram is shown below.