Legacy Metrics

1929 Stutz Model M Four-Passenger Speedster

M8-43-CY17AroadUnited States
Engine
5.3L SOHC inline-eight, ~113 bhp (rebuilt with titanium rods, aluminum pistons, 9.5:1 compression)
Colour
Cream and coral

A 1929 Stutz Model M Four-Passenger Speedster bodied by LeBaron, featuring a single-overhead-cam inline eight-cylinder engine in a semi-custom 'cut-down' speedster configuration. Originally owned by California socialite Eva May Johnson from at least 1937, the car later entered the celebrated Cunningham Museum collection before passing to Miles Collier and subsequently to firearms manufacturer and Stutz devotee William Ruger Sr., under whose ownership the engine was comprehensively rebuilt to high-performance specification by Callaway Cars.

Ownership

  1. Auction sale
  2. 1937 → 1970Acquisition unknown
    Eva May Johnson
    full documentation

    California socialite and sportswoman who used the car as regular transport from 1937 onward; resisted selling for many years and refused at least one prospective buyer she deemed unsuitable.

  3. 1970 → 1986Private sale
    Briggs S. Cunningham
    full documentation

    Acquired after roughly two decades of correspondence with the prior owner; car was restored in cream and coral livery and displayed at his museum in Costa Mesa, California, until the museum closed.

  4. 1986-12-01 →Auction
    Miles Collier
    partial documentation

    Purchased alongside the majority of Cunningham's collection at a December 1986 sale; the car was not retained as a permanent part of the Collier Collection.

  5. Date unknownPrivate sale
    William Ruger Sr.
    partial documentation

    Connecticut firearms manufacturer and dedicated Stutz enthusiast who commissioned a fresh restoration; the engine was rebuilt by Callaway Cars with high-performance internal components including titanium connecting rods and revised cylinder head.

Competition

No competition history extracted from the catalogue.

Maintenance & restoration

  1. Restoration

    The car was refinished in a cream-and-coral colour combination during its time with the Cunningham collection, prior to being displayed at the Cunningham Museum.

    Date of this restoration is not specified in the prose beyond it predating or coinciding with museum display.

  2. Engine rebuild
    Callaway Cars

    The Vertical Eight engine was rebuilt to high-performance specification, incorporating titanium connecting rods, new aluminium pistons at a 9.5:1 compression ratio, and a reworked cylinder head for improved gas flow. Forced induction was reportedly tested during development, achieving approximately 400 bhp, though the car is currently normally aspirated.

    Work undertaken during William Ruger Sr.'s ownership; the car retains an externally standard appearance despite the internal upgrades.

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Each chassis record is compiled from public auction archives and links to its source material. Ownership, competition and maintenance entries are extracted from those catalogue listings by an LLM, which can make mistakes — please contact us with any corrections. The summary is Legacy Metrics’ own writing; we do not reproduce catalogue text.

“Full” and “partial” documentation labels indicate how well each entry is corroborated in the underlying sources, not an audit of the car’s physical paperwork. Names of recent or living owners are withheld for privacy.