T-man It is a 2 pass radiator in a box with an internal baffle, that makes the water cross through, go up, then back through before exiting. We haven't installed the bungs yet for the cooling water in, the heated water out or the pump out bung for taking the water out for warming up the eng.
We will also have a heated water line from under the thermostat to go through the dry sump tank to heat the oil and then back to the intake side of the water pump. We may or may not run a second thermostat in that line to close it off when its up to temp.