This intake features a beautiful polished finish on both upper and lower intake. Intake works with 86-93 Mustang GT and Cobra 5.0. It is designed for high performance street use, bracket racing, nitrous or supercharged applications. This intake is identical to the Edelbrock Performer RRM intake. We recommend to use with 70mm throttle body for optimum performance. Intake is 50-state street legal and has provisions for EGR and PCV valve. Use Fel-Pro #1250 intake gaskets.