64 Barracuda Engine Swap ?

AS far as I know the motor mounts for the 273 to 318 do not need to be modified. They only need to be modified when installing a 340 or 360. Correct me if I am wrong.
One thing I know for sure, if using the original 64 push button trans,you will need an "adapter bushing in the end of the crankshaft. I have them available, for $20 shipping included, in the USA. If you want one PM me. Use the flexplate for the 318 engine.