leaf spring relocation question

i am working on this myself, i have taken the front hangers off 1 set of springs, flipped them up side down and for now just tac welded them in for placement, bolt patern works out so i am still the same bolt on connection as original just in a different location, looking through here at the pics i think i will do the same thing as pettybludart and drill and add a sleve in the frame for the rear, when i mocked it up with using the spring hangers off another set of springs it lifts it up 3 3/4 inches, but with his idea i should get back down to 2 1/2 to 3/4