Sanderson DD7 Headers or TTI "step"

I have the TTI step headers with full TTI exhaust on my 68 dart. I also have a mini starter which was a pain to put in. I have minor clearance issues such as #3 header tube is very close to the aluminum head as it swoopes down, #7 tube is also very close to the brake line/frame rail area...I just wrapped with some fiberglass wrap. The wires/terminal on the mini starter is also very close to the header which I also wrapped with fiberglass. My Z-bar cleared the headers but its close to the starter. Overall the headers fit well just tight in some spots. Some guys have "miles" of clearance and some guys have tight fits like me. I really think its all about car-to-car inconsistencies (tolerances) of how they were built in the 60's.