OK, so looking around I see there are upper and lower control arms and front and rear panhards. The control arms are offered in adjustable as are some of the lower. Also there are upper control arms with a bend to clear fuel tanks. i am assuming I don't need the bent upper adjustable units as the factory straight ones dont hit the fuel tank now? Is it complicating the setup by having the control arms adjustable or simply go for the +11mm units for the 2-3" lift range? Do I ned to change the upper control arms at all?