A stock replacement radiator from rock auto is a pretty tempting way to go but are there better options? I'll run an external trans and engine oil cooler, and am running electric fans.There are Griffins like this one. https://www.summitracing.com/parts/gri-1-55271-x?seid=srese1&gclid=CI3M5Ib_n8sCFQiqaQod8D8IqA . That seems to be the same dimensions but thicker core. Anyone know of a real "drop in" that would be easy?