Hey guys I've recently purchased this 03 SB hard top built by whitedevil95. I take possession of it next week. It's my 3rd cobra and 2nd terminator, still have an 03 DSG vert. However, this hard top is my first car above 500rwhp. Engine is set up as follows: TVS 2.3L Gen 2 Aftermarket Supercharger w/ 3.0 lb upper pulley /4.0 lb metco lower pulley. VMP GT500 Throttle Body. Whipple Crusher Intake with GT500 Mass Air Flow Sensor. Full Metco Double Bearing Idlers. https://www.svtperformance.com/threads/2003-sonic-blue-cobra-coupe-6270.1175772/ I'm interested in getting a back up tune, ideally 91 octane, just incase I end up getting myself out somewhere with no E85 or if I want to take the car to KC or Springfield mo from Wichita. The car is set up with a 3" upper and a 4lb lower, is there an upper pulley big enough to slow the blower down for 91 without having to swap the lower? I'll have 04 sleeper do his magic to the tune. Thanks for your help!