The steering box hits the header with or with the shim. I need the engine to be lifted atleast 3/4" in order to not have the header hit the steering box, however, by doing this, the stud on the engine mount isn't even close to being long enough to fit through the bracket that bolts to the engine and although I haven't tested it yet, I highly doubt that I will have any hood clearance to shut the hood. Surprisingly, with the engine mount having the big gap on the drivers side, the engine sits almost perfectly level. It also sits very high, to the point that the fan blade is almost above the radiator. It can't go down any further though because of the steering box.