Have a chance to pick up a mid 70's 140 mercruiser with an R drive. Boat is a Caravelle 16ft. 50/50 on worth restoring, Hull is solid but interior shot, floors stringer etc. Motor and drive complete and was a lake boat. I was thinking about scrapping for parts,out drive,carb alternator etc. Would anything from this set up be compatible with my 84, 3.0, 470 mercruiser with an Alpha 1 drive. I can pick the whole thing up for less than $ 100.00. Looks like out drives would be able to swap out from what I looked into?