If it’s that good I’d leave it alone.
Cheers k3fud- I’m leaning that way too. I did replace sump gasket and crank position centre o ring, with a new belt ready to go in on reassembly - but if there are no preventative measure people would recommend I’ll stick her back together- just waiting on a radiator hose that somehow had a massive gouge in/ would have been an imminent failure if not spotted.If it’s that good I’d leave it alone.