Whos running over 700whp on an 8.75?

Are your upper 4 link bar tabs welded on top of the 8-3/4? Or are they on the axle tubes? The D60 has a cast center housing and welding to it is specialty type welding scenario. Nickel rod type stuff. You’d have to move the tabs off the center section and down on to the tubes. Reducing the angle of the upper bars.