Did mine this sat, got a pair of Lemforder ones from ECP with a discount code for about 30 quid.
I found, unbolt the bottom bolt on the caliper carrier so you can get a breaker bar and socket on the hub pinch bolt, we used a hammer and punch and an impact gun the other end to get it out, really seized. Then used a splitter to pop the joint out, and then unbolt from the wishbone.
We found its best to bolt the new joint to the wishbone first, then move it into position on the hub as it was easier to line one thing up then two. Balljoint in, pinchbolt in, tighten up, job done.
Hope that helps a bit mate.