The NMRA Technical Committee released a rule clarification today in Limited Street. Precision Turbo and Engine has updated its part number system and the only changes to the rules reference those part numbers. The turbochargers are the identical technical specifications that have been legal in the category since Limited Street's inception. This update is to conform to Precision's new tracking system and these are NOT new products. These changes go into effect immediately, unless otherwise noted in this document. The 2020 NMRA Class Rules and all Rule Revisions/Clarifications can be found here: https://www.nmradigital.com/2020-event-info/class-rules-payouts/