1967 Mustang supercharger?

the tremec is a better box than the t5 as the t5 is more or les a std gearbox the tremec is the ford toploader plus one yes overdrive or the t56 is the 6 speed they used in a car called the dodge viper you may of heard of them... but maybe overkill for this project as you will have to widen the tunnel. as for superchargers, the lower the compression the better they work also you can run more boost. same goes for turbos.