I have a Champion 3 core in my Belvedere. It never gets over 180-190 even last summer in the 90's w/high humidity and hot lapping. I run a factory shroud and derale mech fan and pump.

I bought it from someone her on Moparts. The 1st rad I got was welded very poorly(made 1 call and it was all taken care of. the sent a pick up request and sent the replacement very quickly)