fab stock cats to a 3" y-pipe
#2
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I have never seen/heard of it. any reason why you wanna put stock cats and not aftermarket/highflow ones? also, I think the stock cats would be somewhat of a bottleneck on the 3" exhaust considering the stock exhaust is smaller.......
#7
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i was hoping to get something of more the traditional "box" shape for when my car gets inspected in cali, but im just going to say f*** it right now, the thunderbolts are looking really nice and compact!