New axle.

Where it is wont lower it any. It just puts the front spring eye on the same plane as it was before.

What does lower it is replacing the rear shackle with a slider. That should lower it about 2" as there is no shackle height.

It should be noted that I have a full 12 point roll cage and frame connectors, so removing the material from the frame in my opinion isn't a big deal.