Lower Control Arm Bushing… (pictures!)

Someone here must have done this before. Ok here is the deal - I need to put on new lower control arm bushings before the alignment shop can align the front end. I've ordered and received some very nice graphite impregnated polyurethane bushings from Energy Suspension for both the lowers and uppers. Now for the lowers, all it comes with is just the bushing without the metal parts. I'm supposed to somehow reuse the metal parts that's already in the lower control arm. Someone please tell me how to do this! I've got the lower control arm off already.







The bushing that is supposed to go in...



Thanks!