How much and can I use parts off of another sled for this.I want to install a sway bar on my 04 proxr800.It is really hard to turn on hard packed trails.I have set up sleds before, so I think it must be the sway bar right?

id leave it out and try taking some ski pressure off, i ride hard pack and mine turns... my .02

I mounted the complete sway bar assembly from ProX2, (bar and bushings), took me about 15 minutes to mount. Just loosen the rear of one of the trailing arms and have a rivet gun at hand.

Combined with looser front spring setting the sway bar made the machine a lot faster on the trail, and the lower front end is not to any disadvantage when it comes to top speed either.