Bought a kinda finished 34 Ford couple of years ago. Beautiful 3 window body with a TCI frame. Did some stuff to make it drivable and personnelize it. Got tired of the 350/350 combo and am installing a 383/tremec 6spd. magnum. Problem is the engine installed angle was about 8 degrees. I had adjusted the rear pinion angle to match. But with this install I would like it better. It has a beautifull stock floor and I could cut out the center and put in a large tunnel so I could raise the rear of the tranny? Lower the motor mounts which could create interference problems with suspension parts? Or just leave it at 8 degrees, being that it is a finished car? Your thoughts?