If it is a 4.9L it is with oil cooler. I believe a Northstar only had oil cooler in the concours with heavy duty cooling. On a Northstar there would be lines from the oil filter adapter to the right(passenger) radiator side tank. The transmission oil cooler is the one on the left side. A 4.9L is on the left side tank. Chances are that there is only one part number for service, and they all come with a cooler.
Tuesday, July 7th, 2009 AT 10:46 PM