[twindman]

I have a 2013 Mountaineer - 362. I bought it because it had the lowest (close anyway) pin weight on any Montana or Mountaineer (and maybe the High country too). It was listed at 2070 I think. Actual pin weight is around 2500. I had a Montana 2980 previously that listed a pin of around 2460 and actually was around 2800+. So I would be pretty confident that yours would be 400 above the listed weight. Unless you have the washer/dryer in the front as I would think that would bump things up.
I agree having a gasser instead of diesel may leave you undersized. A diesel would be no problem with a F350 in my opinion.