I have 4 brand New Forrester Intake Manifolds. the center plenum has an oringed seal to prevent leaks (no more welding lol). It also comes with nitrous bungs already tapped into runners. Performance has very very minimal lowend loss with great mid/topend gains. Comes with everything needed to bolt on. Phenolic spacer and all nuts/bolts. Choose Stock TB flange or mustang throttle body. $470 shipped!!!! Sorry they only fit 1G 6 bolt heads.