I was at a local salvage yard this afternoon and stumbled across 3 carbon fiber driveshafts. One of the workers there checked and said they were from a 94 GMC but didn't know what model. The shafts were 63" center to center and 4" diameter (roughtly 13" circumference). I didn't ask for a price since I needed a longer driveshaft for my 94 S10 project. Just hated to see them laying there not being used......