Factory ride height rear end 71 swinger

Looking to replace my leafs in my 71 swinger as far as I know there stock original with new bushings I installed its gotta 318 with a 8 3/4 I just installed. My question is does anyone have specs on myb bumper height or wheel opening I just wanna see how far off it is from original. I called espo she said original replacements would probably raise it two inches if there original. There 190/70/14s on it. I put new shocks on it last summer monroes it just seems really soft back there.