Also this Caprice from 5.06 is actually the '93 model. They never used the '91 model in either 5.05 or 5.06. Whoever added the '91 Caprice page conveniently posted a shot where you couldn't tell it's really a '93.

http://imcdb.org/vehicle_478669-Chevrolet-Caprice-1991.html
http://imcdb.org/vehicle_1725575-Chevrolet-Caprice-1993.html

There are 3 2-star '91 Caprices in its comments sections from episodes 4.02, 4.07 and 4.16, I'll send another zip with 3 images with the episode numbers as their file names and you can decide which one you think is best.