set up a while back for all out dragging purposes and it's supposedly worked. I also remember Adam Saruwartari old Z32 had one, if I am not mistaken. I've never actually seen a dyno sheet or anything remotely proving it... but I have seen it work on the Z. I would stick with a dual exhaust set up. I just don't think it be worth the time and effort. Beside you'll probably have to go with a 3.5" or something crazy like that to make it work. Anyways... have fun with it. Good luck either way.