L7 Sierra

I was looking at my front suspension today while rotating my tires, and was thinking that I could weld up the factory holes, and re-drill them about a inch up to make the truck handle better when lowered. Mostly to reduce bump -steer, and caster chamber changes when driving spiritedly.

I know that Z'ing the frame is a time tested option, but on the GM NBS sierra it looks to be enough room to relocate the arms up in the factory brackets, and along with a little cutting. It could all come togather.

Also this maybe really dumb, but could the the front coil over be flipped to the lower side of the A-arm?