2 piece driveshaft or not

[dsraven]

If in doubt, set truck on groundor drive it up onto some blocks so it is at ride height. Then cut a length of 1x4, or other that you have laying around, to be the length from diff yoke to trans tailshaft. Now jack the rear of the truck up until the shocks bottom out. Check to see if the board will still fit and not be too long. Now let it down off the jack and put enough weight on the rear of the truck to bottom on the suspension snubbers, get some friends who can sit on it or something. Then check the board length again. Thay way you will know for sure if the length of shaft will bottom out in the trans or seperate from the trans when the suspension travels. The slip yoke lenght only allows for so much and too much travel wears out the tailshaft bushing and seal.