Im thinking on doing the housing and lower plenum and The exhaust manifolds and see. I dont want to get into ripping the heads off but hopefully mitch got most of that out when he ported the heads. Maybe I can do these things and come back and redyno just to see if there was and improvement before I do bigger cams and larger exhaust. I seen some s14 guys dyno about 15-19 on ave higher after Extrude hone on there exhaust manifolds. Heres a pic of my heads.