You can reuse the stock front bushings with the Z0K bar they are the same on the front, not on the rear. You will either need the GM ones from the dealer for the rear or you can get the Energy Suspension 27 mm with grease fittings, I know they fit I have them on my car. Like I said I will help you, not a big deal I have the tools. My place is not the best place to do it in winter, it can get cold and wet, but we can find a place. I have a covered garage at work in Reston if we are quiet and fast. I am pretty sure I will end up helping put Critters on too, so you guys pick a place and a time when you get the parts. (I would certainly take a chance on the Prothane greasable ones for the front $20, just to be able to lube them, you could always use the stock ones if they don't fit)