Class A with Rebuilt title

I need some information about buying a motorhome with a rebuilt title. The one we're going out to inspect had a salvage title as a result of a serious accident and has been repaired so it now has a rebuilt title. I'm suspicious it may have had water damage. So much of the vehicle has been repaired or replaced, but no frame damage. My inclination is to bypass this one, but I am curious if a vehicle that has water damage but has been repaired will ever be a safe one.