Chev used their own front section and added a Borg Warner overdrive unit. The internals of the front section are the same as a regular Chev 3 speed except for the main shaft. The back section is the same BW overdrive that they used in the T86 which was used a lot by Ford. The output shaft will have Chev splines. The shift lever from different body styles are radically different in order to make them work. I would guess your shift levers to be original, but they are meant for the car they came out of.
