I just recently ordered a ebay downpipe and when I bolt it on to see if it would bolt up to my o2 housing, it did, but doesn't match up perfectly. Just thought I post it up and see if you guys think it would cause any problems.
This is for a 2g gst, 2.5 from o2 to 3 inch ebay downpipe, it'll be bolted onto the e3 16g as seen in the pictures.
It's a cat. elim. downpipe. It's 2 1/2 at the front where it's bolting up to the o2 housing and it goes down to a 3 inch to my buschurracing catback which is 3 inch also. It does bolt up but the size of the flange don't match up pefectly. I'm just curious as to if this will be causing any problem, that's all.