Champion Radiator dimension question.

Wish I could help on the thickness. That dimension seems to be missing from a LOT of rad catalog info.

The rad very likely has 3 rows of 3/4" tubes which is just so-so in terms of heat transfer. I'll guarantee that the fan is FREE-FLOW rated at 2500 cfm which is just barely adequate if you could actually get that flow. But, put the pressure drop of 3 rows in front of it, and I expect the actual air flow to drop into the toilet. And the free flow at highway speeds is heavily blocked.