ok i am about to install some 4.56's on my 2000 jeep tj 4" lift 33" bfgs is that too low of a gear or is it about right? i talked to the guys at 4 wheel parts and they said it was about right are they just trying to make a sale or what? and how much should they charge me for install? thanks for the great advice i know yall will give me. I don't wheel too hard but i want to be able to run in fith gear going down the highway, i talked to a guy with some 4.56's and he said he hauled going up and down vail pass in colorado which is where i'll be in a couple of years, i forgot to ask what kinda milage he got.