Yes been in touch with Trailer saver and they told me it was fine to add angle iorn to the bottom of mine and bolt it down like its big brother. But to not use it beyond its ratings. So I plan on making up a bracket that bolts to the rail system but allow me to bolt it flat to the bed. The bed has a 1/2" plate floor under the Diamond plate. So its going to be easy to bolt down.
Not sure on the stacks yet, but truck does not smoke much at all. And know some would rather have the smoke high then coming out from the bottom. As they claim there RVs get more stuff then with stacks.
Now for the bad news, Trip to our house today running 70 to 80 MPH on I-40. almost 22 MPG with no trailer. Was told it has gotten 25 MPG when you keep it under 70 MPH more like 65. And loaded with a camper like ours there fuel tickets with hand figured comes out to 15.4 from Fl to Denver Co. Motor only has 31,000 miles on it now. So if its getting this kind of MPG its going to make me smile. Allison has double overdrive with top Gear 0.61 and rearend is 5.13, using the cummins gearing stats it shows exhact RPM's they show for the BEST MPG. so it may well do it. But I will be happy with low teens loaded any day. Truck only holds 150 gallons so will not be fueling up as much as now.
Pete