Shelley just get new one made or old one from parts truck shortened, have them balance and install new joints while apart. Call your driveshaft shop and ask how they want measured. Some can go by center to center on joint cups, some can go from other places. Best to have the yoke in trans to measure. You have to allow for movement in/out of yoke when you hit bumps and haul loads. You don't push yoke all the way in or pull way out. You can usually see the wear area on the yoke to see where it rides on seal most of time. Place it in same place on new trans. Replace the trans seal while down too. Doubt you would find a stock shaft, just what you want before going nuts looking or if at all. Call the shop, measure like they say, take one to them or they will have all the parts and tube if you got bigger bucks to spend! You can shorten, but you can't lengthen w/out buying a new tube.
