am I the only one to do this it will be done in about a week or two really wondering whats up because some people say I might need cam gears saying that overlap is too much saying I'll detonate at high RPMS. just wondering if anyone else is turbo with S4 cams. Also did non turbo 300zx's use 370cc injectors? they are red in color some people told me they need to be purple all the answers to all these questions will be appreciated thanks.