What cooler are you running? Is this it?
http://www.improvedracing.com/improv...ler-p-591.html
If the dimensions are accurate then I think it's too small.
After reading this I'm worried I may need a cooler that is as wide as my radiator. I suppose if I space it up slightly I could manage that but I don't know anyone who makes a single cooler that wide.
http://www.camaro5.com/forums/showthread.php?t=410224
Stock cooler is a step back. Cooling 290 degree oil with 220 degree fluid versus 290 degree oil with 80 degree air, it's just a matter of surface area now.