Yes the 833's tranny's are a bolt in replacement for 70 and newer B/E bodies but like pink said the Granny gear 4 speeds are not the same and will not fit.

The bearing retainer size is larger on the OD833's than on the early model non overdrive 833 and more often than not the rear shifter mounting pads are not drilled and tapped. Those are easy fixes.

A/F bodies used a shorter tranny than the trucks/vans.