In 1971 and early 1972, Porsche produced a limited number of special 914/6s equipped with the M471 Competition option package.

These were intended to homologate the racing version of the 914/6 GT; Modifications included wide steel fender flares, a steel flared front valance, 21-millimter wheel spacers, flared fiberglass rocker panels, and 6x15 Fuchs alloy wheels.

The M471 homologations were based on standard 914/6 chassis.

These were quietly announced in a March 1971 sales bulletin entitled “The Competition Option Group.” 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.

With 23 914-6 M471s produced in 1971 and 1972, Porsche considered the M471-optioned cars produced in 1971 as “factory GTs”.

Although the 15 produced in 1971 were originally intended to become race cars, most were eve...