Now I know you Caddy Guys don't want to hear this but Lincoln also ran the 5 X 5" bolt circle on some mid 70's town cars and had a few nice wheels. Also the complete list includes 70-98 2wd chevy full size trucks, blazers, suburbans, and the astro vans* caprice wagons and all GM full size wagons roadmaster**, vista cruisers, and parisennes (for example caprice sedans used smaller bolt circle)straight through from the late 60's up until their demise, but all caprice, road master, and vista cruiser 92+ up.
*astro vans had a nice 5 star with an unmarked cover no logos whatsoever
**remember the nice dukes of hazzard looking vectors mags on the buick wagons, but be careful they ran them on the smaller bolt circle cars too...