In a March 1971 sales bulletin entitled “The Competition Option Group,” Porsche quietly offered a special equipment package (internally known as “M471”) aimed at homologating the 914/6 for SCCA C Production racing. Porsche offered three different types of cars within that Option Group: The first was the M471, a race car look-alike for street use or for custom GT conversion; the second two, both referred to as M491, were race cars for either track or rallye use.
