I need to replace mine (all of them) but I want to know the best way to go about doing it. Can I just press them out with a clamp and press in the new ones with the clamp or how do I need to do it? Also which ujoints should I get? Autozone has like 3 options....one that is greaseable and two that isn't....does anyone have a link that I can just buy them from or know which ones I should go with? I'm trying to get them changed out while my truck is down!