I was wondering i got a 96 civic dx coupe and i have intake and exhaust and some other **** done to it. I was wondering how much a d16y8 head would cost and would i need to get anything else with it like intake manifold and stuff? also how much would it cost for me to get that installed by a professional cuz i dont think i could do that by myself. Also what kind of gains can i expect from that and would it be worth it? thanks