easy job as above, bolt at the back thru the rear bush and another thru the front thru the front bush. undo
and remove the nut & bolt thru the bottom of the bearing carrier, and the nut on the bottom of the roll bar. then use a lever to pop the bone out of the bearing carrier, alternatively stand on the wishbone and jump up n down
the rear bolt hole should have a tin metal sleeve thru it, the way i get these out usually is to use a small screwdriver to poke a gap between the edge of the bone and the sleeve, then poke some thin nose pliers in and grip the sleeve. then twist, the sleeve will then hopefully wrap round the nose of the pliers then come out. sometimes its really rusted in though, in this case gonna have to use some brute force + ignorance!
dont forget to replace the sleeve as it ensures the rear bush is centred in the subframe before you bolt it up. to get the new one in jack the wishbone up level, then use a drift or something to centralise the bush in the hole. sleeve slots in dead easy then.