I just changed mine over the weekend. I had to change my oil so it made sense to remove the cooler at the same time. I have a 2.7 and it was pretty straight forward and easy with Webers... With the 3.2 you might have to remove the intake to get to the top duct that channels the air to the cooler from the shroud.
1. I removed the driverside heat ex changer
2. Drain Oil
3. Removed some bolts on the right side engine tin so that there was clearance to remove the cooler
4. New Oil seals (two small, one larger), 3 manifold head exhaust seals, and one muffler to heat exchanger seal
I purchased the oil cooler from tom1394racing and drove it to Ultrasonic Cleaning in Carson and they cleaned and tested it for me and it passed.
