The interesting tube frame design, consisting of a solid axle in the rear and a front independent wheel suspension on trapeze v-rods, offered sufficiently creative space, in addition to the touring factory configuration for well-known chassis manufacturers, such as Frua, Bertone or Vignale. The Vignale version impressed customers so much that it was later accepted into the factory product line. During its nine-year production period, the various customer requests also led to three different ZF transmission variants being deployed: through the S4-17 and S4-30, the five-speed version was later also equipped with the S5-17. Even the Shah of Persia ordered the model as a stronger 5000 GT version.
"Luciano Pavarotti also owned a 3500 GT in the Sebring configuration," explains Signore Cozza spritely. "He was a friend of the company and also a brand ambassador – regardless of where he lived in the world, there was always a Maserati waiting for him as soon as he left the house. When the Maestro made an appearance, the importers had to make a car available. Then I would receive a call: Signore Cozza, the Maestro is coming, he needs a car – preferably a Quattroporte since it had to be a big car." In Europe, Germany was the main importer of Maseratis in the 1960s. Automatic transmissions were not an issue at that time and no more than 15 or 20 units in total were sold annually.