I’m sure this has already been discussed, but I have a 2011 Charger with a 5.7. I bought a 15+ 3.90 lsd diff, axles and subframe. I know I need a custom driveshaft and a tuner(for the gear ratio). Does anyone know of an adapter that will let me use my original driveshaft? Maybe something that would replace the rubber puck on the end of the driveshaft? Thanks in advanced!