Walt K. has a friend Marty that is working on this- Nailhead w/5-speed in a regal. Throw a post over in the Nailhead section! I spoke with Marty once, he had some issues with the exhaust manifolds and I'm not sure how they were resolved. Ted
I think a guy named Donny (goes by 425Regal on the board) has just put a nailhead in a Regal. Check out the Nailhead forum.