1960 gmc 4000 grain truck

[connorm]

https://67-72chevytrucks.com/vboard/...play.php?f=239

That is the link to the medium duty forum, there are some fairly regular posts on there.

As far as replacement parts, Fort Wayne Brake and Materials has always been a big help for my dad and I. They were able to make custom lines and were able to get stuff for my dad's 1963 Ford F600 Cabover, so they can get the weird stuff. Also having old service manuals or a good Napa store should still have the old books to cross reference parts.