Wow! I've never even thought about that.
You don't really mean flip the axle, that would be very bad, you just mean bring the current axle to run on top of the springs instead of underneath, right?
I suppose you could make a cradle or spring perch for the bottom of the axle. I think you would find clearance problems galore with the frame. If you go to my web site you can see what monoleaf springs and a 2 1/2 inch mor-drop axle will get you.
