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| I believe you will do just fine with your 8420. I pulled our 40 ft with a 8320 all spring at 8.5 mph, it was a pretty good tug, I didnt have any extra power, if I would shift up a gear it just wouldnt pull it. I had flat-wavy combination unit, but I just ordered a new one with wavy-wavy to move a little more dirt. Be sure to get one with the hydraulic hitch. I would recomment the wavy-wavy, the flat blades are more prone to bending from hitting rocks. And the wavy will cut just as good, but they will move more dirt. | |
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