Control Arm Bushings

[LAP1DOUG]

I was going to replace my control arm bushings as allowed by certain racing rules to minimize deflection that causes caster and toe change during wheel loading, but I can't figure out how in the world to remove the stock bushings.

I have hammered on them, and heated the control arms with a torch, but no still no luck. Does anyone know the trick to this?

Thanks for any info.