Yes they were. 117 of them in fact, both coupes and convertibles, with 215ci Red Ram Hemi power.
They cost more than a top-of-the-line Cadillac in 1957, but reportedly were purchased by Frank Sinatra, Peter Lawford, Eddie Fisher, Glenn Ford and Desi Arnaz among others.
Check out this website complete with pics: http://www.supercars.net/cars/1572.html