So I'm trying to disconnect the rear springs so I can install my shackles and in the process one of the bushings gets all chewed up. So I bought some poly bushings to replace them... only problem is, I can't get the rest of the old bushing out. Does anyone know of a good way to get the metal piece (not the one the bolt goes through) but what the rubber is attatched to out? Thanks!

1994 P'up, 22RE, K&N, LCE exhaust sys (header, cat, muffler, 2.25" pipe), 1" RB seat lift, 1" RB body lift, 1.5" rear lift via shackles, Rancho 5000's, 33" Pro Comp M/T's, 4.88's w/ Aussie lockers front & back