mines been installed on my EG8 Gli Sedan (see build thread for info)

ebay headers > magnaflow 2.5" hi-flow cat > stainless 2.25" catback > 1 stainless hot-dog resonator > xforce S12 twinloop (prefer S10 - but they are hard to get)

it sits pretty mutch flush with how my stock one was lol - tips a little more beefy and its on like a 10deg angle - but thats it

its second hand - and it sounds a little loud at times - but most of the time its dead quiet - no buzz/fart AT ALL - there is a small vibration in one of the flanges that causes a buzz noise at full wot - but ill get my mechanic to sort it out

one thing i do miss is my induction roar - can hardly hear it over the sound of the exhaust at full wot =(