Stop in for a cup of coffee

look at the pan. even from the top view looks to me like 904/999

My guess is the tail is trom a truck application, assuming the shorter tail is for cars.

Yes... 904 pan, 904 ID markings on the housing. The main housing comes up as Valiant/Dart... I've not had any fortune in coming up with a differentiation between the vehicle applications that might change the length of the tail.

A puzzlement

Technically yea. But it’d probably require the gear set to be changed too. Especially the output shaft.

I don't think there was that much work put in it. The builder had this core and worked from there.