thx to X25 for his input on a cooler and install thread here
http://www.camaro5.com/forums/showthread.php?t=381050
i did the cooler upgrade at the same time as the new engine.
i went with a SEATRAB series 1, 60 row model with AN 10 lines with fire retardant sheathing
NOTE: i did end up cutting one of the heat exchanger mounting bosses off of the oil pan because it was pushing into one of the lines.