The GM Muncie 4 speed adapter to the Jeep Dana 18/20 is 4.500” long. The adapter material is 356 T-6 heat treated aluminum alloy. The adapter has a provision for a rear transmission mount. The adapter kit will include a new main shaft for the Muncie, seals, gaskets, fastening hardware, & adapter instructions.
The adapter assembly fits the1946-79 Jeep Dana 18 & 20. This kit is only offered in a 6 spline output shaft.
The GM Muncie M21 / M22 can be identified by an aluminum case that is 10” long and a side cover with 7 bolts. The new main shaft included in the adapter kit will fit all models 1963 to 1974. 1963 models will require addition parts.
PN715600 Hurst Competition Plus shifter
PN715501 Shifter Bracket
PN715625 Muncie Rod Kit (Male Studs) or
PN715626 Muncie Rod Kit (Female Studs)