The original motor mounts for the 221 or 260 had a 6 inch distance on the block. However, it's pretty easy to make it into a 7 inch mount. That said, any 221, 260, or early 289 will bolt in. The 302 will fit, but needs 7 inch mounts. The 351W fits and there are aftermarket headers for this swap. The 351C will fit as well, but that involves more mods than you probably want to do right now....IE daughter's car. Otherwise you can cut out the shock towers, and install Mustang II suspension., then sky's the limit. I have a '62 fairlane and meteor myself, waiting out back for builds.