yes, unless your going w/ a preformance auto like a lentech, or c4 for racing duty. as a former crapmatic driver, this was the best money I spent. car feels 10x stronger, dynoed a whole 60 horses an 70 ft lbs over the auto.
an it feel like a muscle car, when you row through the gears an the rpm climbs to the redline..its a rush for the driver to have control over the powerband..
as far as materials needed, a t-5 computer is better, but the car can work w/ the auto computer, it jus not as smooth. as the computer is still trying to fight the trannie for possesion of the powerband.. a fox gen a9l cpu is btweer jus casue its more aggressive. or you can do the whole diablo, superchip tweecer thing an get even more perfomcance.
hardcore racers will tell ya an auto is more precise, but i'm sayin its jus fun as hell to row through the gears in a 5/6-spd mustang..ain't nothin like it in the world imo.