BlueCrush-question about your exhaust

[CAN-AWD-VIBE]

Listened and fell in love, I wanna be just like you! Not really, I will probably use a Magnaflow Universal muffler but who knows.I got the setup from your soundclip page but have a couple questions.I gather with a 2-1/4 pipe from pre-cat to cat and 2-1/4 from there you used a 2.5" high flow cat?Off of that there is an O2 sensor... how did you remount it? Did you have it welded in or did the cat you used have a hole?thanks BC (or anyone else who has a custom exhaust, I just know he is AWD too)CAN-AWD-VIBE