So I am installing an RT Diff Mount with the Energy Suspension PU top mount (GM style) bushing. I am also keeping the L28 drive train.
Has anyone done this mod and corrected for the lower drive train angle that occurs with the RT mount? Have you shimmed the mustache bar in order to return the driveshaft to diff angle back to factory spec? I am using the AZC mustache bar and was thinking of reusing the factory mustache bar washers (minus the rubber) to shim the bar down approx 1/4" to get the rear of the diff lower and correct the angle. I know the RT diff mount was originally designed to accommodate the V8 swaps, so the drive line angle is a concern for the original L28.