I dont mean to jack the thread but i have a similar question. i have the 4" superlift also but mine has been on for about 3 years and i did not get the front drive shaft. typically what would be the first sign of the stock drive shaft going out? there has been a rattling sort of sound coming from under the truck for about a year now and i cant figure it out. everyting seems to be fine though so i just left it. now that i think about it i wonder if it could be the front shaft.
2004 Ranger FX4 4.0L
Superlift W/ Fox Coilovers. BL. Bumpers. 63" Chevs. 6400's. 4.88s. 35s. Magnaflow. Air Horns. Winch. OHC. 8.8 L/S. And the list goes on...