Keep it simple. Cut a coil, relocate the upper control arm (Shelby style), add discs and if the back is to high, add a short lowering block. The stock parts are plenty tuff and your best bet for driver reliability. The more complicated stuff is kool (MSll, fatman, Global west, etc), but one break down on the road and no parts available at the local parts store will really make ya be glad if the stock stuff is in place.