congrat on getting a piece of awesome history i bought mine new in 02 and have done a couple ground ups more for its the best way to check every little thing on it as it goes back together.. yes u can get kits for the a arm bushing u dont have to replace the a arm or j arm! id start with figuring out the high idle first before u put a bunch of money in bearings and bushing in case u have air leaks ect get it running good before u worry about the little things!