cheep back end lift question

so when you look under your five lug taco you see that the rear axle sits on top of the leaf springs right? And when you look under a prerunner or 4wd the axle sits under the leafs right? So why can you not simply take your springs off lower your axle put the springs on top and flip the mounting hardware upside down? I feel like there is something I'm not considering or something that may get damaged if its attended?

 

does an add a leaf just stop the stock leaf pack from flattening out as much or does it create a tighter curve in it?

 

^ this ... aal and be done

 

I went to a place to get an AAL for my truck, and they said it would lower my truck instead of lifting it, are they wrong, or was I missing something with the SUA 5lugger?

 

I've heard you can do the flip with the leafs. but you'd have to get shock tabs remounted