Another think to watch out for on the axle swap is, at least on the half tons with which I am more familiar.
The 72 W200 should have a divorced 205 transfer case with lockout hubs and the 75 trailduster should have a married fulltime 203 transfer case with solid front hubs and an issue you will most likely run into is the 72 W200 front axle has a different pinion angle to mate up with its divorced transfercase so you will end up with a funky pinion angle and possibly some drive shaft issues if you put the the W200 axle with the 203 fulltime transfer case in the trailduster.
The 75 Trailduster has been fully converted to a 1993 Ramcharger 360 MPI engine with a 518 4 speed automatic and the non full time transfer case.
I want to swap over my 72 axles as they are part time drive and the transfer case now supports this. I can't install my front driveshaft until I do this.
