A Maxxum 140 2012 or newer or a new Maxxum 150, both 6 cyl machines, would probably do it. Depends on the hp needed for the auger I guess and what you're augering. 140 is rated at 120 PTO, 150 at 125PTO but then when you have a PTO load the tier 4 tractors give a boost in hp. I just don't remember if that works for stationary use too, have to check with the dealer on that.

Pretty good jump when you go to a Puma, and there's more options of transmission too. I'd take a look at them side by side to see if there's a size issue.