What would it take to put a set of BFG AT's on my 04 Explorer? LT 315 / 70 R 17 New wheels? 6" lift? Is it even worth it? I have the availability to get 5 of these tires for $400. I need tires anyway that are going to run me about a grand new, so I was thinking if I can get a lift and everything for the same $$$ it's worth it.