Engine Oil Cooler

I suppose I'd be ok since the turbo oil inlet is restricted. Maybe restrict the oil cooler too depending on pressure drop.

I had thought about running some sort of cooler on the return side of the turbo but it is only a mere 12" line. Use a copper hardline wrapped like a heatsink. Problem is I don't know how effective it would be and it is a tight clearance between the lower radiator hose, crossover pipe and return line.