The BMW M1 was a collaboration between Germany and Italy to produce a car for the FIA's Group 5 racing category. Rules required 400 road-going examples be produced, meaning only 453 M1s were made. Around 10 M1s were sent to AHG where they received M1 ProCar racing parts, including suspension and engine modifications, and one-off custom color schemes by AHG's Hermann Altmiks. This AHG Studie M1 was completed in 1980 and features a BMW M tricolor paint scheme and a 350 horsepower inline-six versus the standard 277 horsepower. The car was part of the AE Performance collection, owned by Paul Walker and Roger Rodas. Expect a hammer price of over $400,000 when the auction ends.