65 Barracuda with factory 318??

Nope the 318 built in 1965 polysphere (A) engine wouldnt fit. Thats why they made the 273 (LA) engine for the early A bodies in 1964. The displacment is stamped into the front of the block right there for god and everybody to see. If it says 318, it is not original. LA 318 is 1968 and up. First A body 318 was also in 68.