JG1199, you probably will not have a choice in front end weight buying used. Most come with 12k front end and you can get up to 16k which we get when we order a new truck. 45' coach will have to have double tandem rear ends. We build on day cabs and we also specialize in the standup sleeper cabs like my picture shows. Go on my website to look at the coaches we have done recently to see lots of pictures. I do not know if I can post my website address here. Our company is hawkengineering and you can add the rest if you know what I mean. Call us if you want, 573-204-8296, Jason.