I'm not crazy about the 2.75" piping they use on the cold side, so my current setup is 3" piping to an ebay Y pipe then stockpiping. I'd like to use the 2" CX piping and fab it into my Y pipe somehow. I found a vendor last year who would sell it to me, but then I blew up my green car and didn't really need it. Wish i could remember who it was.