I'm quite sure many older folks have reused pistons when money was tight....just a simple rering job. I was thinking though.......what about some of the more expensive forged pistons and maybe even custom made ones. They ain't cheap. Anyway I was thinking that one of the problems with reusing pistons is cylinder wear. So if someone has a predilection toward a certain engine and could get them cheaply......... He could buy new pistons for the worn engine and have one of the spare engines bored and honed to fit the used pistons. That way he plans ahead and and still has high dollar pistons for the next engine. I know the pistons are gonna wear some in the first engine, but if you hone the second engine to fit the old pistons and file fit the rings............ Any flaws in that plan ?