My "radiator guy" is FOS

Even though I was already suspect an supposed respected long time radiator guy ASSURED me that the rad in my 67 "should cool it," even when I had the 360

But it has always leaned toward hot on hot days, and WORSE on the highway.

So today I go out the junk rad out of the Demon/ Duster I junked (318 A/C, two core) and stuck that in there. Whatever's wrong with the 67 rad, this newer one definately "leans" towards cooler.