Well the joint is poppin pretty good on the left, and when i called my guy he said to do the whole half shaft and joint boot etc. but when i talked to my bro-in-law he says i can just do the outter joint which is where the actual problem is. I checked the boot and its not torn or leaking so i dont know if it just got worn or a bad job done in its past owners life. i guess its too much up in the air? i figure the whole shaft and joint is the best way to go.