I've got just under 100,000 miles on it and noticed lately the roads really are bumpy and the truck seems to dive and roll around corners. I couldn't keep my coffee from spilling over bumps. Pulled my old front shocks off and they still had some gas charge in them and they weren't leaking but I replaced them with Monroe reflex's. Unbelievable difference in ride and cornering. I wanted bilsteins but got the reflex's for half the cost so I tried them and they seem to be a great shock for this truck. They are lifetime warranted too. I can't remember the truck ever riding this good so I would recommend replacing the stock ones alot sooner even if they seem ok. There is much better to be had if you change them out.
On another note I had a clunking from the front over bumps big or small and saw that my swaybar was rocking in the frame bushings so I changed them and noise is gone. Seemed worse when cold out. Guess these heavy motors take their toll on the front ends over time.

 

With that description it sounds like you installed bilsteins. Cool to here someone else makes a great shock. Im still stuck on bilstein though.