Ok so I am piping my 3" downpipe into my j's 70RR (2.75") and it attaches at the oem header location. As most of you know this is a titanium exhaust so I cant easily put another flange on it otherwise I would. Anyone have a solution for a flange that will attach to my exhaust without too much restriction? I was looking at cutting the flange off my oem header but it restricts down to around 2 1/4"

 

There's gotta be an adapter vibrant makes. I'm pretty sure I've seen something like that in the past. Why not put the same flange on the DP to make it mate up to the J's or have a somewhat little test pipe transition.

 

The j's is a headerback so it goes right to the oem header location. I'm just trying to figure out if anyone has used something close to 3" that will bolt up to it. Basically it would be a 3" flange that would typically bolt up to to the testpipe/cat from the header/downpipe

 

measure the distance from center of the hole to center of the hole on the flange for the j's whatever, then order a matching flange from vibrant. or get a random flange with slotted holes, my welding guy had one laying around and that's what we used.

I had bought a 3" flange but the holes weren't correct for my application.