I'm using a mishimoto KA rad on my swap. It's not really holding up to the task. The mishi design is supposedly a cross flow but it seems like a basic down low. The side with the inlet/outlet gets scalding hot and the driver side is almost cool to the touch. I've added an oil cooler, ceramic coated long tubes, and top cooling panels. Hopefully it works out. If you haven't already bought a new radiator, then check out this one:
http://www.optionsauto.com/prodinfo....KOYO-RH020539N
Koyo dual pass with inlet and outlet on the same side.
I plan on upgrading to this soon.