Clutch rod extension after header install
I have a 72 Demon 4-speed with TTI headers and when I set up my clutch I had the same problem. After discussing the problem with Brewer's they suggested I had the wrong clutch fork pivot bracket...they were right. I swapped out the bracket with the one they suggested and the original clutch rod fit perfectly and I did not need to lenghten the z-bar. My suggestion is to give Brewer's a call.
http://www.brewersperformance.com/