Okay, my current setup is a '73 460 in my '88 F-350 with a C6 trans (had a 351 paired with it). I'm going to be getting another 460 for the truck soon. My question is, do all carb 460s line up with the transmission bolt pattern to pair with my C6? I'm mainly looking to get another mid 70's engine, but may have the opportunity to get an earlier 68-71 engine (are they any different in bolting up to my trans?). Sorry if I sound ignorant, I'm just trying to jump into this stuff and learn.