Obviously there is no question about whaf is available as there are plenty of fluid cooler choices , but what I'm curious about is what fits well in the xj engine bay and atleast makes an attempt at keeping the return flow above the resevoir...I was going to do one big cooler like a b and m stacked plate or a big derale heat sink ...but it looks like a set ...pair...of 12 inch or 10 inch derale heat sinks may package better in that limited space ?