ok i was thinking about buying my dad a x pipe for his 03 mach 1. all he has done is flowmaster mufflers. are there any kind that will bolt up to the stock piping/ headers. and in the future if he ever gets different headers still work with it. thanks.

 

the bassani and slp x pipes are modular design. this means that you can upgrade to that specific companys long tube headers later on and not have to buy a new shorty midpipe. also you can switch between catted and straight pipes because of this design.