Re: RnD Fabrication 1967-1972 Chevrolet & GMC early C10 / C20 / Blazer Radiators!
all of our radiators are made with dual 1" thick cores (same thickness as a brass & copper 4 core, as the brass & copper style used four 1/2" thick cores, while aluminum uses two 1" thick cores). The marks are on the core side (fins) but with a fin comb could be straightened. I'll get a pic today for you. PM me your email address
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