I dont see why not, one catch though, cast water pump or aluminum? aluminum pumps are much easier to find brackets and pulleys for, I used truck pulleys for my setup, works awesome.
think it'll be a better idea if i swap bell housings on the 904's i have since i know the one in her already wont give me any problems
Not quite following you on this one, but slant trans cases are for slants, explicitly. you will need a smallblock trans to work, try to get a 66+ 904 so driveshaft length wont be an issue. pre 66 used a ball and trunnion mongoloid coupler instead of a u-joint.
