hey everyone ..i need a midpipe for my car... i got gt 40 heads performer rpm intake e cam and 1 5/8's longtubes... im 99.9 percent sure i will be going with the race bullets dumped what midpipe should i run? offroad h pipe or offroad x pipe.. im not sure if they make a prochamber for my appplication or how mmuch that wold be.. how does a h pipe and x pip sound diffrent at idle? will an x pipe have a smoother idle? (id liek the e cam to havea noticable lump) if it has one that is i havnt started my engine up yet.. do x pipes perform better than an h all around?.. well thanks for any help.