Twin Jimmys - Here's an older thread on
Okie Bushing Removal that might shed a little light on your question.
It involves removing an "Okie bushing" that was used to replace the original front driveshaft bushings and seal, to then install another new "Okie Bushing". If not able to drive it out like mentioned there, the only remaining option I think is to remove the driveshaft assembly, disassembly and drive the "Okie bushing" out from the rear with a long section of pipe.
