I found a guy who has a Holley 600cfm carb on a 307 engine that he's gonna sell me for cheap. I was thinking since he's selling this so cheap, I might see about getting the heads, but I'm building a 350 and want to know what the pros/cons of this would be. assuming theyd even bolt up. I've heard the tales of the wondrous 4416 305 heads when built properly, but can 307 heads produce similar results? also, he has a weiend intake on it. would that be any good?