I concur with John Pitkin, I would first try doing some things to prevent damage to the paint. Maybe torch heat a Bolt that fits into the busing until it is red hot pick it up with some pliers, and push it into the bearing on the end sticking out until seated against the bushing. It may require a hammer because the bolts will grow in diameter. Then I would take a punch and try to drive it out with a hammer from the opposite end. If that doesn’t work then go to the method of a heat gun that will damage the Powder Coat Paint. Heat is the only thing that will break the bond.