Help for the sake of my Saleen Mustang

I have a mustang v6 saleen sport , and would like to make it into a fast car at least a 12 second car.due to the fact its an original saleen I think it should also have the right to be a fast car like its older brothers.any ideas on were i should start? The cars in perfect condition equipped with full racecraft suspension straight from Saleen

Sorry These Are the exact specs as is;
-17x8.5 inch saleen alloy wheels
-high performance 235/45/17 z-Rated tires
-RaceCraft Suspension struts and Shocks
-Special Strut Mount Bushings
-RaceCraft Strut Tower Brace
-RaceCraft Front and Rear Sway bar
-RaceCraft Front/Rear Coil Springs
-Saleen/Hurst Quick Ratio Shifter
-High performance Alignment And Tuned Chassis
-8.8" inch Differental 3.27:1 Ratio

Self installed/
-i do have a free flowing true dual exhaust.^
-stage 2 flow-masters
-and a BBk Cold air intake