Everything can be purchased seperatley from the dealer, except the rear trailing arm bushings. That has to be bought as a unit(about $250 new). Energy Suspension makes all of these, including the trailing arm one. Price the OEM ones online seperately and as units, aftermarket and dealer, then you decide. The bushings are not that hard to get in and out. If you go with poly ones getting them in is easy and if you ever have to do it again, even easier. You can buy seperate pieces for the poly parts or the whole kit. Kit doesn't include the trailing arm one though, they're about $30/both.