There are machine shops that sleeve using brass, which will also outlast you.
White Post Restorations in VA comes to mind, they have been doing brakes for antique cars and trucks for decades.
Any NAPA Auto or big truck repair shop should be able to send your shoes out for relining.
Other parts for your truck will need to be sourced the hard way as there are not any big truck vendors...if the part isn't the same as a pickup you'll need to hunt for it. Having a Parts Book will be a big help along the way...if you don't have one ask here and maybe someone can help, that way you can search eBay or post here in the parts wanted section.
Part of the old truck ownership fun is hunting the parts!
Mike B
