Steve Heller's "Marquis DeSoto". The Marquis is based on a 1998 Mercury Grand Marquis.
It its, yes!
It took him 20 years to collect all the parts together from a '59 Cadillac, a '58 Lincoln, a '55 Cadillac, a '65 Buick, a '57 Corvette etc etc then he built it over a 4 month period in his furniture shop on a '98 Grand Marquis!