Hi all. I picked up a used rear LM hub assembly with the backing plate. What is the difference between the 65 and the 66-69 versions? Is it just the U-joint bolt size? Thanks!! And have a great weekend!! Ron Tinkham http://www.ronsjeepjunk.4t.com/ Pine Tree Corvairs (in the works) 66 Corsa Convertible, 140, 4sp Maine