We are a full engine machine shop and dyno test facility, along with an engine installation center and parts warehouse. We can set up the heads for any lift camshaft solid or hydraulic, and we offer the heads in 250cc Cathedral Port when CNC ported to fit pre-2006 LS1 LS2 and LS6 engines that require a cathedral port intake manifold. We can build the heads with special INCONEL for forced induction applications, and we offer these heads as cast or CNC ported--we also offer solid roller spring and retainer upgrades to. 800 lift and 860lbs open spring pressure. 700 lift hydraulic roller. WARNING: This product can expose you to chemicals…