As a Mustang II owner, I will caution using the M-II option for a V8. All my M-II V8 cars have either had the mounts rebuilt or are needing a rebuild, the rubber deteriorates terribly. The M-II V8 mounts are hard to find and the rebuild kits are about $100. It's a nice rebuild kit, but costly if you are starting from scratch anyway. I got mine from Classic Auto Reproductions, if you do have M-II mounts already.