400 into 65 valiant

It won’t fit with as produced parts from anybody. To put the RB in mine I’m having to:
Notch the K frame.
Fab mounts for the engine and transmission.
Modify the trans cross member.
Modify the trans tunnel on the floor.
Modify the left side inner fender steel to allow more room for headers.
Fabricate headers.

other than that it’s bolt in... lol