Hey, so I recently bought a 2012 V6 Mustang
with the perf. pack, and the only mod it has is a JLT CAI. I'm looking into exhaust upgrades, but having trouble putting together something where the exhaust tube sizes match up. This is what I'm looking at:
BBK long tube headers [1.75" diamater tubes, collector size unknown]
BBK shorty catted X pipe [2.75"]
Stock X pipe-to-muffler section [2.25"]
Roush axlebacks [No idea, I'm assuming 2.25"]
So if I went this route, the x pipe tubing would be a half inch bigger than the rear section of the exhaust, unless I went with an actual catback which are all 2.5", but all the actual catbacks they make I either don't like or are too expensive.
The other way would be to get a muffler shop to fabricate a new X pipe-to-muffler section with 2.5" tubing, but then I'm not sure if the Roush axlebacks would fit on 2.5" tubing.
Of course the easiest and cheapest way to go would be to get a set of shorty headers and the Roush axlebacks and leave the rest alone, but I really want the long tube headers.
So, does anyone have any experience installing larger diameter exhaust components? What did you do for the rest of the exhaust piping?