I feel like you could get quite a bit of business offering Demolition Derby Wheels. Good sets of rims would include: 14 inch Nissan Rims, 14 inch Dodge 10 slot rims, 14 inch D-50 rims, 14 inch F-150 rims, and narrowed versions of each. Good Tire sets would include: 23 & 25 inch BKT, 23 & 25 inch Galaxy tires, 23 & 25 Inch Skid steer tires, 25 & 27 inch Forklift tires. Narrowed Tires would be 25 & 26 & 27 inch Kerb Kicker tires. If needed, I can get pictures of each set of tire and rim. I would also suggest Front Bumpers including: 76 Chevy Impala, 75 Monte Carlo, 74 Chevy Impala, 83 Crown Vic, 75 Chrysler Pointy, 73 Chrysler Cordoba.