The deal from Complete Exhaust would be around 525 dollars if you got the maggie catback and the magnapack mufflers not bad.Here is the part numbers for the catbacks. Cobra with IRS 15644. The magnapack is 15673 for gt's and mach's. Its the same for both mufflers tho 4x9x14. This is from The Official Site of MagnaFlow Exhaust Products - Exhaust Systems For Trucks, Suv's, American Muscle, Diesel, & Sport Compact Vehicles Im sure he's right its a direct fit if you wanna do the swap for the magnapacks!