so umm, Ironhyde just developed a rear end shudder/vibration at hard acceleration the other day, gonna have our tranny guy drive it tomorrow to make sure it's not the tranny, but i am pretty sure its the rear end. it's got the one-piece driveshaft, so it has nothing to do with that, we even run a mag-hytec diff cover and Amsoil 75/90 to try to keep it alive but i guess it might not have been enough. I don't think that this Eaton TruTrac design is optimal for Pulling, so what do you guys think should replace it instead?