Apologies, misread thread, it was a used electric bass (custom colour LPB '64 Precision, MOB). A life defining moment in some respects, a big lesson in economics and the vintage gear market in others. I partly blame @Happy Jack
Sure it’s fine, might even be a huge improvement on the original, but I suspect any buyer would want to know a few whys. Why did you do it, why is it better than the original, and why are you now selling it?
A personalised customisation is OK, but then selling that for more than the original bass would sell for used certainly invites comment. Might be a huge improvement, but it will not be an easy sell on if not