Very interesting how an earlier ('53-'54) Plymouth body was used with '55-56' fenders. So if the 273/318/340 or 360 V8 would fit into Paul's car, how about a 277 Poly (poly-hemi head) from a '56 Plymouth? I pulled one out of a parts car that I bought last year, and that motor will make 195 hp, I believe. Over the years, the poly got a reputation as "a boat anchor", which I believe is totally undeserved. It is basically the successor to the original double-rocker 331/394 hemis, and seems to be a great engine.