Just a heads up on that Cold Case radiator, if you get the same one I did, 756A, it is a 1/2" thicker, so 3 1/2" rather than 3", than their site lists due to the front of the brackets not being flush with the core. Also had to massage the brackets slightly to clear the bolts for the A/C condenser on the driver side, not quite in the right location for my 68 Dart. Overall I'm pleased with the radiator, hasn't been in long or driven too far yet, so time will tell.
The radiator kit is another matter entirely though, it is over 3/4" thicker than the site lists, so 7 1/4" instead of 6 1/2", made it not fit in my car without more modifications than I was willing to do at the time. It also does not include a wiring harness for the electric fan even though the specs indicated the wiring was included.
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Just making you aware, not trying to discourage you from purchasing from them, like I said, the radiator seems quality and fit with minor mods.