Guys I have TTI headers and a 2.5" MF, X pipe system, bought as a kit to suit 71-72 cuda, its fitted to my 73 Cuda. No issues with factory sway bar, plenty of clerance. I did have to massage the pipes from the diff back so as I could fitt a pair of MF 6x6 race mufflers but no big deal really. I'm very happy with the outcome