Have a borla catback exhaust that was on the car when I bought it. I took it off when I did my sti turbo swap to keep COBB all the way through. Seems to be in good condition and sounded great with the header that was in it previously. I'll try to get some images up here to look at, if not I will text the pics. If interested here's my info Name: greg Location: fargo Number: 701-261-one one seven seven (can text pics) No trades please.
Honestly I haven't measured. But it kooks like a 3" system. I'll measure tomorrow for you to be 100%, anf not too often to the cities. But I'd always be willing to meet halfway unless I can find someone making a cities run.
I could. But really, its only 150 bucks for a perfectly good exhaust. I'd rather not give it away then see it for sale on here a week later.