Procharger's F-1C, F1-R Cog race supercharger kit 1FX244-F1C for Mustangs,Procharger, will give your Mustang huge horsepower gains and lower drag racing times! This Procharger SC kit is the fastest way to take your Mustang to the next level of bolt on performance. Makes a great power adder for any Mustang using a cog drive. Intended for race use only.