u r correct sir^
as i do not kno the details but if u were to get a gsr head ur comp ratio will be higher as to using a b16/b18c5 head u would yeild more volume. as for ur build u might as well build the motor from the ground up because u'll run into some complications along the way. now unlees u want to do the head work on a ls and mill it down and what not just add some spray and u'll be at the 200hp mark every time u hit that button

imho