1) Now refresh me if I am wrong: the v8 swap in WOULD NOT require a
k frame swap?? I recall they are the same in 64-66 a-bodies between
slant six and v-8
Correct, only one K for '63-'66.
2) I have a clutch pedal set up from a 64 valiant. would those slip right in?
Haven't done this but I would say yes, its the same platform
3) I have a 1966 A-body 4 speed that has the small output shaft slip
joint, not ball and trunnion. ( same as automatics) one year only I
was told.., which would be good because I have a bunch of 904 auto
drive shafts laying around.
Anything else I am not thinking of?
For stock exhaust manifold, the factory driver's side piece is 4-speed specific IIRC.