I have a 2005 FX4 model F-150, and I want to get rid of my Fabtech performance and get some Fox 2.0 remote resovoir, I have the 6in system, but no add ons like body lift or anything. 35 in tires, 17in rims, how much travel do I need?

 

Since you already have shocks matched for your lift, simplest thing to do is remove one of the rear shocks and measure it. Measure between the two mounting eyes and take two measurements. One with the shock fully extended and the other with the shock fully collapsed. Custom length shocks are usually listed with these two measurements. If you can't find what you need shopping on the website, give these two dimensions to someone at Fox, and they'll easily hook you up.