Production chronology1978–1983
Sourced production or model lifecycle range used by the main catalog timeline.
curated ↗6 years
Simpler open companion to the M-4, identified by its exposed tubular roll bar rather than the targa treatment. It shared BRM's new integrated tubular-steel/fiberglass structure and Volkswagen rear-engine mechanical layout, so trim choices remain within this model rather than extra series.
Sourced production or model lifecycle range used by the main catalog timeline.
This record contains useful sourced evidence, but it does not yet meet the reference-ready standard. Still needed: attributed imagery. Fields we cannot source stay empty rather than guessed.
No model-specific total survives.