Original GM brand new old stock 2.56:1 ratio muncie 4 speed input (10 spline with no id ring grooves) with matching ratio cluster gear For 7/8" pin these are both in the original gm old boxes (will update pics and part numbers on the weekend) fits all 63-65 muncie 4 speed wide ratio applications corvette chevelle nova impala keep your trans all correct with real gm made gears Rare new old stock find priced as package only will not seperate includes free shipping