yes a small section of the radiator support will be cut out. the steering box will be moved forward 1 ½ to 2 inches and tilted back. the marlin frame brace is really nice..should make it a snap to move
If you ever plan to run hydro assist then go ahead and tap that steering box now. It shure would be better than removing it again later. In the last pic is the truck resting on the tires or on the jack?