leave the bottom end well alone then unless it’s showing sings of wear. can cause more issues rebuilding a good bottom end than prevent. 100k isn’t normally lot of miles for a bottom end on a relatively stock bottom end, tho it would perhaps like a new oil pump and a couple of baffles in the sump will help prevent any issues in time to come.
was thinking it had done the 100 k with those carbs which would have been about it for the rings / bores as they never last no where near as long with big carbs. subject to more load and bore washing when running cold ect