Should have NO end play but a little radial play is normal as long as the wheel doesn't touch the housing. It won't spin on it's own very long cuz it runs in an oil film. Keep the boost boot clamps tight... the hot side clamps loosen and need to be tightened oftener. It doesn't take much of a hole in a boot to lose the boost. I've had to remove them to find the tiny holes.
Just a heads-up on that truck... the engine breather is at the front and they can really cr@p up the radiator and cause overheating. BTDT with friends first 24v CTD trucks. I've had to pull the radiator to clean them good and extend the breather to the rear with a hose. Craig