And in true Vaughn Gittin Jr. form, his 1969 Ford RTR-X Mustang has finally gone sideways. Originally built as a SEMA project vehicle, Gittin Jr. promised many that he would take it out on the ...

The Spec 3 RTR Mustang claims that the supercharger increases those numbers to 810 hp and 615 lb-ft of torque. An X-Pipe exhaust is available on all three Spec models. Like the Spec 2, the Spec 3 ...