I presume that if it all goes tits up I can just remove and install another Fox Float shock of the same dimensions and it'll work again?
Depends if they or anyone else still makes a shock of the same dimensions & stroke and with a similar tune. The former is the key, the later is kinda important but not a showstopper.
There are some of the same model on ebay but obviously I don't know if there are fifty different iterations of "Fox Float RL" over a bunch of years, for example.
I would say find yourself an ancient hardtail frame with the same headtube/BB/seat tube diam./wheel size. It'll cost you £20, then sell the old one for £15, and rebuild onto "new" frame
Depends if they or anyone else still makes a shock of the same dimensions & stroke and with a similar tune. The former is the key, the later is kinda important but not a showstopper.