I am making up an order with Rockauto and plan to order all the seals to fit my transmission but have a bit of confusion about which ones are required for the axle shafts. Rockauto lists a "Drive Axle Seal", BECK/ARNLEY 0523520 and also "Main / Output Shaft Seal" which is divided into left and right seals. The latter seem less likely to be the ones, but it's odd that it comes in a left and right variant. There is a separately listed input shaft seal which is smaller and I am pretty sure really is the input seal. There is also a bearing and seal kit which shows only two large seals, so presumably the transmission doesn't need both Drive Axle and Main / Output Shaft Seals. My transmission recently gave trouble due to a complete lack of fluid, so I wish to replace all the seals when the weather warms up.