Rebuilding it in place might be a workable idea if you can get to the gland ok.

I do remember doing one in place many years ago but I forget why, or what make forklift it was. I remember being unhappy with how well the piston went back in but I think the result was ok.

If this last Hyster pin hadn't finally broken free my next move would have been to cut a section out of the outer frame, and if direct heat didn't do it, cut the head off of the pin so I could drive it inward with a sledge. (swung by a younger mechanic than me) Welding the frame back and making it look pretty would have been a pain though.