Monteverdi Sierra

The Sierras were essentially reskinned Dodge Aspens and Plymouth Volares, although the two convertible versions were based on the Dodge Diplomat.[1][3] The coachwork was done by the Italian coach-building firm Carrozzeria Fissore, where they were given new front and rear styling, custom Italian leather interiors, custom gauge clusters, and a custom console.[4] The new styling included Fiat 125 headlight assemblies, Renault 12 taillights and Wolf Race mag wheels.

The suspension was changed from the Chrysler torsion bar design to independent, upper wishbones and lower horizontal arms combined with trailing radius rods, coil springs, adjustable shock absorbers, and stabilizer bar. The only powertrain option was a 175 hp (130 kW) Chrysler 318 cubic inch Small Block V8 paired to a Chrysler TorqueFlite A-904 3-speed automatic transmission.[5][6]

• Approximately 15 sedans
• 2 convertibles (1 red and 1 silver)
• 5 station wagons

• Plymouth Volare
• Dodge Aspen
• Dodge Diplomat

Monteverdi Sierra convertible, one of two prototypes built