I've got the trust r-spl fmic its 600x244x76 as you can see from my avatar it fills out the hole we cut in the stock front bar pretty well (i'm searching for a new front bar... 400r possibly). This kit should be good for at least 450-500hp @ flywheel, by the time I do my ecu+turbo I expect to be around the 330-350hp @ wheels mark. I'll probably stop there, not worth pouring more money into the car, just buy a GTR