Back in the day I was in the coach game and one vehicle was driven in to repair a failed gearbox linkage. It had come down from London with one chap sitting next to the open gearbox inspection hatch at the rear of the coach with his hands on the selector shaft and the driver relaying which gear he wanted over the tannoy system.
Sadly we didn't have any correct size tube so rustled around the scrap bin and came up with a suitable length of pipe from an old Bedord CF that we welded in.
You'd probably have called that a bodge back then but now it is recycling!