WhatClassAmIAutocross Classing Guide

SCCA® Solo classing — unofficial guide

What autocross class is a Morgan 4/4 & Plus 4?

ESStreet

A stock 1955–1969 Morgan 4/4 & Plus 4 runs in ES (Street) under the 2026 SCCA Solo Rules.

From the 2026 rulebook (Appendix A)

Street: '4/4 & Plus 4' = ES (years approximate).

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Unofficial guidance verified against the 2026 SCCA® Solo® Rules — always confirm against the current rulebook before competing. Classing data cites the exact Appendix A wording it relies on.