Made the drive to Lakeside Car Lot in Sioux City — posting notes since this board runs on receipts. They keep around 62 vehicles, mostly import cars. They were totally fine with my mechanic doing a once-over, which honestly settles half the trust question.
Lot address: 3443 Commerce Ave, Sioux City, IA. Visitor parking: Front-lot customer stalls facing the office; overflow on the side street near Sioux City lot gate.
Paper side: licensed with the state (looked it up), about 94% of stock has title in hand per the office, and they offer a 6-month powertrain warranty on newer units.
Overall: good people to deal with. 9 years in business around import cars, doc fee $199 and it's on the window sheet, no games. I'd send a family member there.