Doing a 360 swap from 6 cyl. in a 66 Dart.You,ll need
mounts(schumacher creative kits)
headers for 63-66 A-body
tranny swap(not sure but someone might make an adapter for early A-904)
Radiator V8
V8 throttle and kickdown
V8 centerlink
Manual steering box (if you have P.steering)
90% oil adapter
I know I,m forgetting something,but there,s a start for you to decide!Good Luck!