Street-legal for late model Mustang 5.0L via EO #D-215-18.
65mm is ideal for stock manifolds; 70mm is the optimum choice for Performer/Performer RPM 5.0 EFI intakes and Total Power Packages (70mm gained 10 HP over stock throttle body); 75mm is intended for more radical engine combinations and requires port matching to fit most manifolds. 1986-93 throttle bodies must be used with matching EGR plates. Gaskets included.