If you want to slam the front, couldnt you get the 2" drop spindles and the 3" Lower A-arms? and be 5" w/ that? and then you would still be able to crank the keys. I have the McG. drop spindles and keys up front. Right now, my keys are cranked up all the way. And its still low. THink if i de cranked the keys, which i dont like the ride doing that, but i could probly tuck a little of my tire.
they make a 16" drop spindle, that way you dont have to buy new rims/tires right now.