Dual core, dual pass, $600 hit to my wallet is on order. After going over the options including using Wellers SR1 Radiator, we decided the best option was to go with a custom unit that fits like a glove.
I'm going to have to redo the tin and tunnel cooling in the car because the zx10 motor wouldn't quite fit into the existing tin work. So, if I'm incurring a bill for the tin, I may as well drop an extra $300 on a custom radiator to fit the new tin around and do it right.
Here comes the snow ball...