TTI Headers on a 340 in a 65 Dart

Thanks 23, Good to know as i am in the process of reconsidering the TTIs. I may go with a standard exhaust, but finding a 69 340 driver side manifold is a tough job. I understand that a 96/97/98 JGCherokee is the ticket on the passenger side, but the driver side is hard to find for the E manifold that will work. I will lose the HP by not using the headers, but i don't know if I want to go through the shimming and clearance issues on the torsion bars, steering box, and etc. I know it works with the headers, but lots of work. Already have hundreds of hours in the project, and losing some of the interest. Have yo get recharged. Thanks for the input....Best. Old Dart 66