I have a 6.87 inch Crank pulley with a 2.75 inch Supercharger pulley. Vortech says the distance between the two should be 53.6 inches, my car measures 52 inches... Any suggestions as to why mine is way shorter...? Vortech states that I should use a 54 inch belt, I put on a 53.5 inch belt and it's still too long and I'm getting alot of belt slip. Does anyone know where to find a 52.75 inch belt??