NMCA Tech Committee updates 2021 Nitrous Pro Street rules and general regulations

Today, the NMCA Tech Committee updated the following rules:
1. Nitrous Pro Street with approved tire clarifications, adding radial tires to the class.
2. General regulations with clarifications on the staging process.

The 2021 NMCA class rules can be found here: https://www.nmcadigital.com/2021-class-rules-payouts/