O2 housing Question

[booostedGSX]

Okay, here goes. I have a VRS 3" turbo-back that uses a three bolt flange on all connections. My predicament is that I want to pick up an O2 dump, but all that I have seen have a two bolt flange. What I want to know is: Does any company utilize the three bolt flange and make an O2 dump?

 

[fwdmaster]

The only brand I think that makes a 3inch 3bolt o2 housing is Hahn racecraft

 

[Boosted98gsx]

Replace the flanges with v-bands. No bolts to vibrate loose, and no gaskets to blow out or replace. 1 nut is all that keeps you from disconnecting your o2-downpipe.