Legacy Metrics

1979 RUF 3.4 CR (based on Porsche 911 SC)

9119303056roadGermany
Engine
Naturally aspirated 3.4L flat-six with limited-slip differential

A 1979 Porsche 911 SC converted by RUF Automobile at their Pfaffenhausen works in 2014 into a 3.4 CR specification — the naturally aspirated sibling to the turbocharged CTR 'Yellow Bird'. The transformation included Yellow Bird bodywork, RUF wheels, a five-speed RUF gearbox, a 3.4-litre flat-six with limited-slip differential, and a bespoke interior with Porsche 968 Club Sport seats retrimmed in monogrammed jacquard. Documented by the original factory invoice, the car has remained under specialist care in Germany and subsequently the United States.

Ownership

  1. Auction sale
    Sold £172,500 (≈ $216K)

    RM Sotheby's catalogue lot →

  2. 2014 → 2022-05-01Acquisition unknown
    German enthusiast who commissioned the RUF conversion
    partial documentation

    Commissioned the full RUF 3.4 CR transformation at the Pfaffenhausen works in 2014; retained the car in Germany until selling it in May 2022.

  3. 2022-05-01 →Private sale
    US-based enthusiast consignor
    full documentation

    Acquired the car from Germany; arranged a thorough mechanical service and interior retrim at a Berkshire specialist in April 2023. Documentation includes a US bill of sale.

Competition

No competition history extracted from the catalogue.

Maintenance & restoration

  1. 2014Restoration
    RUF Automobile

    Full RUF 3.4 CR conversion of a 1979 Porsche 911 SC: fitment of Yellow Bird bodywork, RUF wheels, a five-speed RUF gearbox, a naturally aspirated 3.4-litre flat-six engine with limited-slip differential, and a bespoke interior incorporating colour-matched Porsche 968 Club Sport seats retrimmed in monogrammed jacquard fabric.

    Work carried out at the Pfaffenhausen facility; a multi-page invoice documenting the conversion is retained in the history file.

  2. 2023Service
    Rindt Vehicle Design

    Comprehensive service encompassing engine removal for inspection, cleaning, and re-torquing; full rebuild of the gearbox and differential; and retrimming of all four seats.

    Workshop located in Berkshire; work commissioned by the current owner.

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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.