42RH / A-500 in a Duster with pictures.

Ok the first picture-

At this point the 904 has been pulled out, the engine blocked into position (1.5 degree down angle to the rear using the carb as the point of reference) the front part of the exhaust along with the H-pipe has been removed and the torsion bars have been backed off 17 turns per side to unload the tension on the cross-member.

What you are looking at is the 42RH case bolted into place to see what has to be clearanced. Some minor hammering gave the floor enough room to not hit the case.