Cold case 756a fitment

Got a response from sales@coldcase. They said I’ll have to modify it…Okay then, that’s that. Mine is a ‘69 fish that was a 318 a/c car hence that OE part # rad. Dunno if that makes a difference? Last note is that if I look at pics of OER brand repo or alum radiators for 67-69 direct fit the brackets look like my O.E. does.
Maybe your "firewall" was not stamped correctly at the factory.
Typical off shore product, it all looks good in the marketing ads until you try to install it. I would return it and buy a Griffin radiator.