Need a car for the Gambler 500 rally

[Garagefull]

As the title says, I'm trying to locate a beatermobile for this year's Gambler 500. Rust, dents or wiped out interior.. We don't care. My son and I will be driving preferably a Mercedes over 500 miles of bad road, off-roading and logging roads in this event over 48 hours. So if you know where there might be a good donor vehicle somewhere on the East coast, please let me know. Garageful