I had to recess my firewall too. I didn't move the floor as much though I went strait down. If I had to do it again I would of used a cable kick down and I wouldn't of have to move it back as much.

My cab is off the frame about four inches and doesn't sit as low as your truck. If I would of had an original frame I would of just used a mustang II front kit instead of a full frame swap.

56 Plaza 63 D100 step side 67 Coronet, 68 Roadrunner, 69 Super Bees, 69 Coronet 500 convertible, 70 Roadrunner Post, 79 D150 360, and a severe case of Mopar a,d,d