Here is the deal I'm getting them for dirt cheap, and from what I know most of OBX parts are bullshit. All I wanna know is do yall think they will perform better than the stock restrictive B18B LS headers I have now (I've heard of some headers performing worst than stock). My set-up is a stock B20vtec. I can't afford any other headers now and I just need something for the next track event coming on the weekend because this stock manifold is choking my motor up top. These OBX headers in the pic have a 2.5 inch collector.