Thanks, hiber8r! At 56, I don't exactly want my car to sound like one of the 18 yr old's "tuners", just a little better! Another post contained a parts diagram comparing the MS3, M3 and M5 exhaust components- from that, I'd say it won't work easily. I'll probably just go with a new Magnaflow muffler with a dual tip. First step on my improvements is the NGK Laser Iridium sparkplugs, then the WeaponR intake...