RE: I need a toad.
Did car dolly for 5 years before going to flat tow. Something else to store. Did it work. Yes. But if you are going to use a dedicated vehicle. I believe flat towing is better. I used a Demco Kar Kaddy 3.
RE: I need a toad.
I towed a 2012 Chevy Captiva for 5 years. Sold it to friends that are still towing it. Captiva’s are the Chevy version of the Saturn Vue. They stopped building them in 2015. Parts are compatible with Chevy Equinox and Malibu drivetrain parts.
RE: Advice on unique oppotunity
LBZ are already 6 speed in 06-07 in the light duty trucks. Did the med duty keep the 5 speed longer?
2006 to 2007.5 Medium Duty C 45-5500 had a 6 speed transmission. But no program for 6th gear. GM never labeled the LBZ in MD trucks . They labeled it LLY. But it had LBZ updates.
RE: Advice on unique oppotunity
When I looked at a Bigfoot Super C. One thing that caught my attention was fuel tank size. It was smaller than the 80 gallon tank in most Chevy Super C’s. One other item was access to cab from living area. All other manufacturers has a cutout to give access to cab. Beyond those items I liked the layout.
Depending on when this 2007 was built. It may have the LBZ engine. After 2007.5 they had LMM with DPF with 6 speed transmission. My preference would be the LBZ. It can get a program update for 6 speed.
Hope this one is what you want in a Super C.