1971 Triumph Spitfire Spec Sheet. The Spitfire Mk IV strides into the Seventies with fresh, sheer lines that preserve its place as prettiest of the smaller sports cars. It reveals the fine hand of Italy's Giovanni Michelotti from its new low, aerodynamic nose through its tapering fender lines to its concave tail with bold integrated taillight units. Condition: Dealer stamped. Looks as though the red ink of the dealer stamp on the back has bled through to the front.