1999 Ford F-150 Truck feels like its on ice skates.

I have a 99 ford f150 and it drives funny. I just replaced the shocks because of noticable diving. I still have a problem though. When driving down the road the truck wounders and while turning it just feels unsafe. I was curious if it could be the torsion bars or the steering sway bar. I looked it over and really didnt see much wrong with it. Thanks