I do know that the no spin rear end availible in the later ones is very tough.
Also that a certain size
(I think it was 11.5 inch)
brake drums used on certain 4x4 models are almost inpossible to find


Luke Dahlin

1946 Chevy 2 ton
1966 Chevy 2 ton
1969 Chevy 3/4 ton 4wd
http://www.stovebolt.com/gallery/dahlin_luke_1969.html]1969 Chevy 3/4 ton 4x4