Actually, the original 828s to Atlanta and in the brochure were pretty decent plywood with a heavy duty paint job that was far better than any I'd seen on a factory 825 cab, so was surprised to find out here that apparently the majority were made out of MDF and that at some point had quit bracing the horn!
GM
They were plywood most years, don't think MDF came around till close to the end
Originally Posted by GM
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