What's the stupidest thing your previous owner did?
Besides mounting a Wings West wrap around spoiler leaving HUGE holes to rust out which they did, installing fog lights under the front bumper, a Dale Earnhart "3" tag on the front bumper with Tec screws, driving it on the beach in Sarasota FL and packing the frame rails with sand, incorrectly fixing the hood where his lovely wife backed into it with a pick-up truck, installing a "Dial-A-Boost" boost controller, and smoking cigars in it making the interior smell like an old man with body odor all the time,
He sold it to ME!