I've put a BigWig on mine. Can't tell much difference. With the camper on it, it sits level, which means the headlights are high. I don't drive much at night so I haven't addressed that. I am thinking about StableLoads. I'm wondering about high winds on western trips.
Our first RV was a cabover. Back in the early 1980's. I had a light duty 1982 F250...cast front Twin I-Beams but a F150 rear end. I bought a 3rd hand 8foot Tejas brand cabover. Wood framed, aluminum skinned. I had no idea what it weighed. I never heard of a CAT scale. After almost turning it over in high winds in Oklahoma I put a set of overload springs on it from JC Whitney or maybe Sears. After that it went on hunting trips in Texas and Colorado, and vacation in Yellowstone. That old truck had a 300 cubic inch straight 6 cylinder with a 4 speed, granny gear, transmission. It held up for several years until the rear end started making noise and the transmission started jumping out of gear. I sold the camper and the truck sometime later.
All the trucks have their good points and these days not too many bad points.
