Gentlemen, I just installed a Fabtech 4" suspension lift and I have been learning a lot about the subject title. I read about TJ's not needing a DPA with up to 6" of lift. If this is the case, then why manufacturers such as Fabtech include one with their kits? My kit had me drill another hole 3/4 of an inch towards the driver's side and relocate the track bar. Ssome kits come with a relocation bracket...to me, drilling a hole and relocating it looks cheesy. I'm thinking about buying a heavy duty adjustable track bar and mounting it in the original location hole. I have not experinced the so called "bump steer", but I do experience severe steering wheel vibrations at speeds of over 40mph on uneven roads. My jeep is a 2006 SE with 33X12.5 on 15" rims. I'm stationed in Okinawa so I have "limited" off-road tech support. Your help is greatly appreciated.