Muncie 4 speed transmission close ratio Corvette Chevy GM - $1,000 (HERMITAGE)

Muncie 4 speed, close ratio transmission.
660 case in excellent shape.
Rare case as it has the fill plug and the drain plug which all documentation says it should not have both.
Case stamped P8B20 --- which translates to February 20, 1968.
If interested I could open the case to take pictures inside of the gearing, but only if someone is truly interested.