well, the guy who did this knew what he was doing. i e-mailed him to see but it has to be an integra fuel rail. also, if your b18c looks like the one on the right, id figure a b18b would be the same, which makes me think this is not an integra one (on the left). anybody with a turbo ls or something who put an aftermarket regulator on, can you take a look at your old one and see if it looks like the one on the right? thanks a lot!!!