If you put a 66 & later K-frame in it any 66 & later B&E body header will fit. They are pretty inexpensive. You will have to modify the tranny mount since it moves the engine back 1.5", hammer the pinch weld in the tunnel, a little hammering for the 727 servo and you can't run the crossram without firewall surgery, but it works. Picked up a 72 K-frame on ebay for $60 that I used on the 64 Plymouth.