Heads up to anyone looking to install TTI headers on a Mopar big block with 11" flywheel- I discovered that the mini starter sold be RobbMc performance (recommended by TTI) no longer clears the header because the dimensions changed on the starter. Even though the starter is adjustable, the header pipe hits the bottom of the starter! What a struggle this has been trying to get the header to fit on the drivers side of my '69 Coronet. I had another mini starter installed- that one hit the side of the header. I then spent $300 on the mini mini RobbMc starter and that one hit on the bottom. The coated headers have been in and out so many times, they now have scratches. I forgot how much fun headers can be!