6BT CUMMINS t400 trans D60 rear an front.
 

I am converting my 85 K5 into a beast. I am wanting to put a 6bt cummins Dana 60's T400 and EVERYTHING ill need for the swap. I know its hard to price all this because it can all be different but a rough estimate will help thanks!!!

I wouldn't use the TH400 trans or any GM trans for a Cummins. The pump won't last with the torque that the 6bt makes off idle. The A518 that Dodge used will work better all around and its easier to come by the correct parts to mount it to the motor. You can even use the Dodge NP205 Tcase as it has the front output on the passenger's side just like the Blazer.

Id say most, if not all of our sponsors dont carry the parts your looking for. You will have to source them from somewhere else.