Well, we found a left over 2017 Ram 3500 with everything we want except the 6.4. It has the 5.7. The good to that is, no MDS to worry about. The bad is, slightly less power. I'm not sure that is such a problem because we're only towing around 8000 and do not ever see getting any larger RV. There are many state parks we would like to go to now and can't because our trailer is too long. Not really interested in a bigger RV so, maybe the 5.7 will be just fine. The really good part is the truck is almost $10000 off sticker. Payload is 4090 and towing is over 11000. I'm seriously considering it.