I’ve replaced my front shock lower bushes a couple of times using a combo of sockets, washers, a piece of pipe and a long high tensile bolt. It’s tight but doable. I used a little grease between the washers and the socket/pipe. Once the bush ‘cracked’ it was quite easy to tighten the bolt and extract the bush. See the pix of my efforts.
If you jack the car up and support it with axle stands you can then position your jack under the lower suspension arm to support it, so the spring won’t have to come out, while you work on the bush.
I also found that the OEM bushes didn’t last very long so I made some replacements up using the metal parts of the OEM bush, I burnt the rubber out with a gas torch, and finding a poly bush of about the right size and pressing the whole lot together with a large vice. They’ve been fitted now for over ten years with no trouble.