72 Demon, 340 4 speed, manual steering, headers?

Dude. Go to the TTI website & read what they tell you. We are happy to help. But not do your homework.
I did, but there's always a catch. That's why I wanted to deal with people who used them. I've built Mopar race cars over the years. 40+. Now I don't like doing things twice! This will be my last car I build for myself.
Thanks for all the help.