Yes, the '83 and older shafts have a real splined slip yoke. The '84-88/9 have a collapsible shaft and all you need to do is break the plastic injection molded plastic pins and then they will collapse and extend nearly 6", plus you have almost an inch of adjustment at the upper splined clamp and I also have the bolt-in extensions for extra long shafts. I run a 2" extension on mine due to the added stretch of the shorter IFS box, plus it is moved way up to the body mount and the 3" body lift. All that pulled the shaft so far apart that there was only about 1" of engagement in the center and it was pretty loose.