As far as I'm concerned if you could build a jig to hold the cupholders, tear down the airplane and rebuild the airplane around the cupholders it would be a restoration.
Each one is unique, obviously. An organization I work with is fortunate enough to have an A-26 that "mostly" needed reassembled. An awful lot of work was poured into it to make it flight ready but since I've moved I'm not sure if the owner (who has made a reputation for himself...) is still funding it the way he originally agreed to. It's been on the brink of flyable condition for some time.
My jobs were limited to making the aluminum shiny again, sweeping up, holding flashlights and stripping the old rags off the controls. Working there got me a tailwheel endorsement and some T-6/SNJ time though
