Now doing more research, it might not be possible because I have a slab floor and would, in theory, have to add a plywood subfloor before the actual wood.
I think engineered might be the way to go but I’ll do more research and actually talk to flooring people (other than the Lumber Liquidator or Floor Decor folks). Maybe I’ll actually visit one of the reclaimed wood places and talk to them.
UPDATE — it looks like reclaimed engineered flooring is available but will need to be sourced. I’ve got time :).