Here are good drawings of the SA and DA varieties.
http://chevy.oldcarmanualproject.com/1929_54chevyparts/07/424.HTM
The pages that follow list repair parts including bushings, sleeves and gaskets, etc, but I don't see any seals... Not saying it doesn't have them. I thought if one could find the original GM part number(s) there might be a way to cross reference them... ??
Somebody must be able to supply them to the commercial rebuilders.


Professional Novice