I recommend that you contact FAXON. They have re-printed lots of older auto manuals. I have used one entitled "1926 1927 1928 Chevrolet Car Body Repair Manual Chevy" which is available from Faxon for about $20.00 plus shipping. This is a book that goes well beyond the assembly of the exterior body. It shows how the original cars were assembled "inside" and there are photos of the interiors on these cars. Faxon is available on their Iternet website or you can go on eBay and just search 1926 1927 1928 Chevrolet Car Body Repair Manual Chevy
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MikeyBoy