opinions on my '65

I'd drop in the 273 4 barrel, unless you are "saving" it. That is what one would expect in a 65 Barracuda. You know how to make it run. I did up a 170 in the seventies. A Mopar Performance cam, milled and cc'd heads, windage tray, it pulled real nice. In the end I went back to a 273 and pretty much gave the 170 away.