This brace is for the 05+ mustang GT with a plenum cover or supercharger. This brace is very similar to the standard GT brace in that is uses chromoly tubes Tig welded to CR steel boxed structures. It is different because it uses two smaller 1” chromoly tubes bent for maximum clearance over the engine. These boxes use all four bolts on the tower to mount the brace solidly( no heim joints to pivot). One look at one of these braces and you will see the design, fit, welds, and finish are second to none. They come in a black powdercoat and install time is less than 15 minutes.