RB20 RB20DET Intake Manifold Fuel Rail Throttle Body 90mm GTR Skyline TB Swap USRB20 RB20DET Intake Manifold Fuel Rail Throttle Body 90mm Skyline TB Features: It's a Brand New fabricated Aluminum RB26 Intake manifold. These intakes have been updated with IAC and are fabricated out of 3mm sheet aluminum and will not bend or flex under vacuum or boost. Material Thickness: 3 millimeters Throttle Body Opening: 90 millimeters Comes with billet 90mm Throttle body uses 14mm injectors eliminating stock style bushing setup Idle Air