rear axle flip

Good morning Gang. I have a quick question. My 73 Scamp rides like a dream right now, however, I would like to raise the back end about 2-3 inches. Have kicked around air bags, air shocks, coil overs, etc. Problem is, I don't want to stiffen up the ride. I was wondering if any of you have ever lowered the rear axle to below the springs rather than on the top as designed. In the custom truck world, one of the easiest lowering tricks was to flip the axle to above the springs thus gaining about 3 inches of drop. Wondering why I couldn't do the opposite to gain some height on my Scamp? Thoughts????