Swung by Crown Wheels in Omaha over the weekend since a few people here asked about them. They keep around 49 vehicles, mostly classic and collector cars. They were totally fine with my mechanic doing a once-over, which honestly settles half the trust question.
Lot address: 8221 Heritage Dr, Omaha, NE. Visitor parking: Front-lot customer stalls facing the office; overflow on the side street near Omaha lot gate.
Paper side: licensed with the state (looked it up), about 90% of stock has title in hand per the office, and they offer a 3-month/3,000-mile limited warranty.
Overall: good people to deal with. 19 years in business around classic and collector cars, doc fee $349 and it's on the window sheet, no games. I'd send a family member there.