Here is the modification I did to the back of my driver’s side motor. Grinding the ears off the back and dropping the back into the case allows the motor/gear to sit farther down on the original Pantera regulator assembly. This pic is before I sealed it shut using gasket maker.
Before doing this, I verified that dropping the back down inside would not interfer or rub on anything. After I let the gasket maker dry around the edges I installed the motor on the regulator and was ready to go.
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