Hi I’m getting started on a restoration project and I’m working on 1966 chevelle with rusted quarter panels most of the rust is along the bottom rear section, around the wheel wells ,they look fine on the outside. My question is ,Is there a good way to rust proof the inside of the quarter panel so I don’t get rust thru from the inside out, Don’t want spend a lot of money on a paint job and not have it last? Thanks Dennis
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