Are you talking about flipping the rear leafs upside down? Been there-terrible ride. The "free" way to lower the rear & still get a stock ride is to relocate the axle above the leafs. In front, find F10 struts(fatter & tighter coils) and cut out 2 or 3 coils and/or heat the coils till they drop to desired height. Beware, if you go too low up front, you won't be able to turn! I found some 12" rims for the front and 13" in the rear. I've been trying to scan photos but don't know how. Anyway, this is what I did back in'88. I'm now trying to find another sedan.