Thanks for the heads up. As another time saver, the new civilian J-180 short mount may be slightly thicker on the side which mounts to the block/head. Mine seems to be though I have not mounted it yet. Pull out one of the existing bracket mounting bolts from the J-180 long alt bracket, and go fetch the next size longer from your favorite fastener store. I'd hate to see this be a show stopper for you after you not only paid full price for the right bracket, but then also overnight delivery. The stock belt will fit with no length mods to the lower alt brace. May need to notch the brace or lower alt ear small portion.