Front shocks are attached with 1/2" Bolts. The upper studs on the rear are 1/2" also. The lower rear eye bolts are 9/16" bolts. You use a 13/16" on the bolt and a 7/8" on the nut. Good Luck. Off the top of my head I don't remember the length. Take and old one with you. Also get some SAE washers and nylock nuts. Or NOT. Be Safe and Take Care.