I have a stock E body rear sway bar on my 70 challenger with Dr. Diff's offset rear hangers and a B body Dana 60. I DO NOT have 3 inch exhaust (though it is Accurate LTD's 2.5 inch). The exhaust is configured as stock and fit easily around everything. There's no need to heat the bar, just put it in a press and bend it. ( compare distance between sway bar eyelets and mounted sway bar end link plates on the springs to find total amount of bend needed, half it, mark the center of the bar, measure out to the eyelet, then bend each side the same amount,) jess