There are some minor differences between the Fox Stage 1 Kit, Ford Performance Fox Kit, and the Roush Fox Kit, but really, if you're not going to be off-road on the regular, then the Eibach system may be up your alley. If you are towing, you may also want to use a lower ride height than their maximum so that you don't get a ton of rear squat, or look into some sort of rear lift or load-support parts.