Absolutely I know! I would put a 318 in my 64 Valiant......but man, that's been done and done and done some more. That's why I want to build a mild 451, disguise it as a 64 383 and make it look as factory as possible. When I raise the hood, people will certainly be expecting a small block and they'll ask in surprise "how'd you get "THAT" in there?" It may never happen, because this little 170 runs so good, I'd be committing a sin pulling it out. But, as long as I can do the swap without making permanent changes to the car, I'll likely do it. I'm acquiring all the parts, at least. The driver's side exhaust manifold and steering column and column shift three speed linkage will be the big challenge. If I can keep "all that" I'll do it. I am pretty sure with all the measurements I've taken and everyone I've spoken with that I can make it happen. If anybody can do it, it's me.