TTI Exhaust on Early A's

I installed the tti headers into the already existing x-pipe system about a month ago. I replaced the Doug's that were on the car. I had to run new front brake hard lines to get them away from the headers, but I have the 73-76 disc on mine. Stock I don't know. I had to move my shifter cable. The tti collector-exhaust adapters had to be modified and I don't know why. Had to shim the rh side motor mount up 1/4" so the idler arm would clear the headers. I had to cut 3" off my steering column tube to clear the rear tube on the left side. All in all, the headers look and function beautifully, but the Doug's are much easier to install.