I have TTi headers and full exhaust on a 440 in my Charger and also on a 400 in my Road Runner. Both 4-speed cars. Both fit great. TTi headers on my Duster, not so great. Had to dent in #7 tube, and modify the z-bar.
Curious about their full exhaust for the B-body, from the header back. Car is a 71, engine is a 400.