Okay so I am getting 3" coil spacers for my front coils, but what do I need for the rear, and how big of lift?? I'm new to lifting so I need all the advice I can get. Would I need the Beltech 6400 for the rear or would that not be enough lift? Or should I go with an AAL + the 6400s? I want to sit perfectly level and have 3" of overall lift. This is going on a 1999 2wd 3.0 Flex.