Well, the later decks utilize aluminum spindle housings and fit without modification.
Example: the ones on a 1720, to name one
they have inexpensive LM 11949/lm11910 timkem style taper roller bearings that GM for one, used in dam near all the autos in the 70's and before FWD vehicles.
The pulley is about $50, they pop up on ebay as well other places,
and still avail from cub new.
