Greg, what is it going in?
If a 63/66 dart, those tti step headers were a stinker to get in. Torsion bars, everything has to come out. And the oil filter adapter bolt has to be machined smaller. Passenger header has to come off to get that bolt tight. Real stinkers, but once installed...... nice


69 Dart GTS A4 Silver All steel, flat factory hood, 3360race weight
418 BPE factory replacement headed stroker, 565 lift solid cam
Best so far, low 10.30’s 1/4
1.41 best 60 foot
6.56 at 104.17