rear lift blocks or?
 

So I am going to be doing a shackle reverse kit on the front and don't want my rear to be sagging when done. I have seen the 4.5" kit but not what I want. I really just want to lift the rear 2" is there a block out there or is the add a leaf the only setup?

Stacking blocks is never a good idea... I'd def go for a add a leaf

I was meaning a whole new block or if the add a leaf doesn't make the thing too stiff I would do that. I would like a decent ride when not towing.

Well in that case any driveline shop could help you out in getting a custom one but axle wrap will be worse in some towing or loss of traction situations