Aston Martin retained Callaway to help it re-engineer its then 30-year old Tadek Marek 2v V-8. Callaway’s brief was for 4v cylinder heads, increased power, and single configuration worldwide emissions compliance.

The Virage road car engine was so successful that Aston relied on Callaway to supply a race version of the road car engine for their 1989 Group C prototype, the AMR-1. It finished eleventh in its first and only appearance at Le Mans.

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