I think I can respond to the original question. I purchased a 2014 Montana 3150RL last spring as soon as I saw Montana was switching to a 3155 model with changes to the floor plan. I am pulling it with a 2008 GMC 2500 SLT with Rancho 5000s to stiffen the ride and Air Ride Air Bags to even everything out. I've pulled it several thousand miles over the last year. Love the trailer, well built, well designed, and comfortable to pull and live in. Only complaint is watch the corners on the kitchen cabinets - clunked my head several times cooking dinner.