How or what do you install to get the '07 Titan 2 wheel drive to get that same height between the rear and the front? I read about the PRG thing, is that what it is for? Does it lower the rear suspension? I measured the front from the rear and the difference between them is 3.5".It may sound like a basic question to most of you guys out there, but I'm a rookie @ this things. I've seen a lot of your Titans and they look really nice and faster than stock Titans. I'm sure I'll have more question about what parts and how to install them as the days or months come by. It's a KingCab. Thanks in advance guys.