i am putting in the 3" allpro rear springs on my truck. my stock frame is gone, replaced with tube, so i have no measurements to go off of. what i need to know is the distance between the front spring eye bolt and the rear frame shackle bolt, and what kind of shackle angle you got. i am looking for about a 30-35 degree tilt forward. i will tack the junk and weight it befroe burning for good, but i need the ballpark number so i can finish the tube back there. searched and only found references from the stock mounts. thanks in advance-your buddy, brad