The GT4 was a groundbreaking model for Ferrari in several ways: it was the first production Ferrari to feature the mid-engined V8 layout that would become the bulk of the company's business in the succeeding decades, and was the first production Ferrari with Bertone (rather than Pininfarina) designed bodywork. Pininfarina was upset by the decision to give cross-town rival Bertone the design, considering all they had done for Ferrari. The styling featured angular lines entirely different from its curvaceous 2-seater brother, the Dino 246, and was controversial at the time. Some journalists compared it to the Bertone-designed Lancia Stratos and Lamborghini Urraco, also penned by Marcello Gandini. From the cockpit the driver sees only the road. Enzo Ferrari himself took a major role in its design, even having a mock-up made where he could sit in the car to test different steering, pedals and cockpit seating positioning.