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looking for a catback for my 2000 mustang gt...no slp or pypes, but will take anything else, even stock. p.m. me or post it up.:banana:

Hey guys, anyone interested in Summit Racing headers and a 2.5" Mac Prochamber H-Pipe? I just bought a turbo kit so I dont need them anymore. Let me know if youre interested! Thanks.

Steigmeier stage 3 ported eaton with 3.1 and 2.7 easy change Pulleys I will throw in Mac off road h-pipe and a set of stock 04 Cobra injectors for free Had over 487 rwhp with this combo, I am selling it because I just swapped it out with a whipple. If you are interested CALL J, at...

I have for sale a set of Corsa DB Red series mufflers. They have a 2.5" offset inlet and outlet. They are in good shape. They will need to be welding into your existing system. These things sound great and really do take the dreaded 2,000 RPM drone out of the system. I am asking $250...

Back up for Sale- $400 for Mac LT and ProChamber picked up or $450 ship in lower 48.

Well I just hit the dyno on Wednesday and I must say I got a nice little suprise. The best numbers on the day were 300 rwhp and 319 rwtq :D (no tune) I'll try to post up some iPhone pics of the dyno sheet tomorrow. And the only mods done are full exhaust (full mac). I really just wanted to say...

Two quick vids of my Cobra with Borla Stingers and O/R Mac Prochamber. It was a nice day so the vids were an excuse to take the car out. I'll post better vids next weekend. First is just a cold startup and second is a 1st-3rd normal driving. YouTube - 2003 Cobra Startup YouTube - 2003 Cobra

hey i might get a mac off road h pipe off craigs for 80 bucks and i was wondering how much off a sound difference it would make with my stock catback and stock headers??. my other question is if the o/r h pipe will pass emissions in washington lol thanks, kyle.:pepper:

Sold!

Pretty much brand new Mac Off road H pipe. I bought it two years ago, put it on the car for a week in the summer. It was too loud for me so I swapped in a pro-chamber and this has been sitting in the garage ever since. This should also fit foxbody 5.0's. Its a nice great loud sound. Paid...