Well they came with 302s. The Mark VII came with the 225hp HO just like the Mustang but they're pretty heavy. The V8 Tbirds came with an SO 5.0 (Standard Output) with just 155hp. But once you swap the computer, which is easy, you can have a field day doing anything you can do to a Mustang; the mechanical stuff is identical. However, the Tbirds, Mark VIIs, and Cougars never got to see 5 speed manuals except in the Turbo 2.3L editions. And once again, the Mustang stuff (pedals, bellhousing, tranny, etc) bolts right in.



