Lower control arm sleeves

[62stepside longbox]

Hey everyone I'm in the process of rebuilding my 78 Chevy crossmember to go under my 62. The only thing holding me back is getting the lower control arm sleeves out. I know most of you would probably just say to use the original ones but I'm gonna be stubborn and I also allready bought new ones and they're going to get used plus I allready mangled the old ones trying to get them out. Any tips/trip/solutions on how to get them out would be greatly appreciated. So far I've tried to use an air hammer with chisel bit but had no success. Thanks