Autox on the Cheap

Since moving to my new job, my truck has been hit twice in the parking lot. On my first day, when I was out on travel visiting the crankshaft supplier, someone scraped their vehicle down the side of mine, just above the rear passenger side wheel well. No note was left. The other day, someone backed into my truck, and apparently had a trailer hitch, and left a sizable dent in my front bumper. Again, no note was left. This is a 6,700 lb, all steel truck. If I were in a BMW M3, or something else along those lines, this would've resulted in several thousand dollars worth of damage.
This, along with the fact that i am focusing all of my funds on making my Mustang the car I always wanted it to be (update: heads are being ported, going from a 2.02" to a 2.05" intake valve, car is stripped down and ready to be media blasted) , I am deciding to look into a CHEAP autox vehicle. I am talking less than $3k for something i can beat the crap out of, thrash through the corners, and really not care about. I am thinking Merkur XR4Ti, Pontiac Fiero GT, MR2, etc etc. There is a XR4Ti for sale just up the road, listed on ebay. If you can think of something that would be fun and CHEAP to autox, let me know.