I have the boom mounted blade for my 420 loader. It is nice for the long driveway and snow. Just drop the bucket and attach the blade in it's place. The blade angles both ways (manual, but it would be easy to put hyd. cylinders on it) and you can really pile the snow high since it attaches to the loader boom. I replaced the skid shoes on it with little tires so that is will glide over the stone better. Seems I paid about $900 or so for it.
Chris
4400HST, Canopy, 72" Deck, 516 Cutter, 420 Loader, 6' Blade, Homemade Sprayer, Boom Blade
1958 JD 620 Restored