Hey everyone. ive been reading and trying to find some posts on how to turbo a motor with the N42 head, and i think ive been misled on some things and would like someone with experience to help me get my ducks in a row.. first off, I have a 1977 280Z, Bone stock motor, 4 speed manual, this is my toy, I autocross it but I baby the **** out of it, and ive been contemplating the choices on more power for the courses.. so I started looking and most people are telling me I NEED an p90 head to even start to turbo this engine. is the N42 head able to stand up to modest boost? 9-11 lbs for a goal.. with a few mods to stock components, is this feasible for an autocross car? or is it necessary to have many turbo ZX parts to fit on this engine? a list of what i have so far is.. : J pipe, 83zx injectors, an unknown ECU and Distrib. a turbo manifold, all this was given to me by the previous owner.. sorry for the loooong message, just wanted to give the most information i can, thanks for any help you can pass along! (I can post pictures of the distrib. and ECU if it helps identify them) Jordan.