I have been keeping my eyes peeled for a good hd mower also, and they are few and far between for a reasonable price. I have a 1980 International 582 Cub Cadet that is seriously stout, cast iron transaxle, cast iron beam axle, shaft drive with a real clutch. International red and in awesome shape. Only problem is the horizontally opposed Briggs twin is toast, not rebuildable, and apparently there is nothing it can be replaced easily with. Front and rear weird tapered shafts on the crank, front drives the deck. I wish I could find a similar mower or a good engine, but I reckon they were all worked to death cause I cant seem to find one.