Here is a recent project. I am putting Porsche 944 rear suspension and transaxle into a 1962 Ford Ranchero with a Lincoln aluminum V6. It's been a heck of a lot of work so far, but is turning out pretty well. I need to get pictures of the front adapter plate so that this all makes a bit more sense. Hopefully the torque tube will be finished tomorrow, I am waiting on some machining right now that I do not have the tooling for. Everything else I have been able to do in house.
These last two pictures need a little explanation. The majority of the torque tube has been built with flanges on the end, as one section will be removable to get the shaft extension out so that the entire rear suspension, transaxle, exhaust and fuel tank do not need to be removed to change the clutch. It also had to be lengthened to fit the Ranchero, so this made it easy. I have been able to center everything so far either on the lathe, or with press fit delrin pucks in several places. However in the center, where I am mating a portion of 944 torque tube, and a section of 968 torque tube that houses a shifter, the tube sizes are different. So I have machined a press fit adapter that the drive shaft can fit through, that will weld in place between the tubes to keep them centered while the rest of it is mocked up.