The NMCA Technical Committee has reviewed all rule requests to date and finalized the 2020 rules in the following classes:
- Xtreme Pro Mod
- Xtreme Street
- Nitrous Pro Street
- Chevrolet Performance Stock
- S3 Stock/SuperStock Combo
- Nostalgia Super Stock
- Nostalgia Muscle Car
- Open Comp
- Street King
- Rumble
- N/A 10.5
- Factory Super Cars