A friend of mine showed me how to replace the pinion seal on my TJ last night. He is a heavy machine mechanic and when we took the seal off, he said that my carrier bearings and pinion bearings are on the way out. Where do I get new ones and about how much is this going to cost and where is the best place to order them from. It is a 2003 Wrangler 2.4L automatic. Thanks in advance for any advice.