Which Mileage Max???
I have the quad box no mileage gain but no worse. It made the truck tow way better than before. I had a 2003 Hemi with the same fifth wheel 6000 lbs pulled way better I could pull up to 70 mph with Hemi up hills. Then I traded the Hemi for the diesel and hooked it on and was very disappointed with 2001 diesel it would drop on the hills to 52 mph but it got twice the fuel mileage. If you look at all members on this site which I have found is that no one is running stock trucks that I could find this tells you something. I really like the box with the extra 30 hp it made the truck hold 60 mph on the hills. I will upgrade it to a xzt box shortly which is very nice feature on the quad box.
I have the quad box no mileage gain but no worse. It made the truck tow way better than before. I had a 2003 Hemi with the same fifth wheel 6000 lbs pulled way better I could pull up to 70 mph with Hemi up hills. Then I traded the Hemi for the diesel and hooked it on and was very disappointed with 2001 diesel it would drop on the hills to 52 mph but it got twice the fuel mileage. If you look at all members on this site which I have found is that no one is running stock trucks that I could find this tells you something. I really like the box with the extra 30 hp it made the truck hold 60 mph on the hills. I will upgrade it to a xzt box shortly which is very nice feature on the quad box.
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very nice
