ive got a 98 gm top swap. it currently is intercooled with a gen 5, headers, 1.9 rockers, ported exhaust and other simple stuff. i wanna get rid of the rockers and throw a cam. im gonna keep everything and just swap the rockers out for a cam. what would be the best gains, an Xp cam or a NIC cam. what pully sizes can i run with my mods plus the cam?![]()