I've been plodding along with some minor upgrades to my truck, and have now gotten to the point of putting in the new trans. It was a over a month of waiting but now that its here having a BTS trans will definitely bring some peace of mind while towing. So while the trans is out what orings if any should I replace, and other then uppipe donuts, anything else need replacing? With 245K on the odo I'm sure things are getting old and brittle.