The Ghibli was a 2 door, 2 seat coupe. After 1969 it was also sold as a Spider convertible. It was sold with a 4.7 or a 4.9 liter V8 engine. That engine had quad cams and made 330 horsepower. Top speed was 154 miles per hour. Transmission options included the 5 speed manual or a 3 speed automatic. One unique feature was the dual fuel tanks. Alloy wheels and leather interior were standard, as were the flip up headlights. This car sold better than the other popular Italian exotics of the day: the Ferrari Daytona and Lamborghini Miura. The Spyder version is about 10 times rarer than the coupe, making them especially valuable. There was also a more powerful 1970 Maserati Ghibli SS. The engine in that car made 335 horsepower.
The Ghibli II featured a smaller biturbo V6 engine, but it still had terrific performance numbers. One particularly sporty version of this car was the Ghibli Cup. It holds the record for the highest power per liter of engine size of any road car... ever. When it was tweaked for the track, it could beat the Ferrari 355 Challenge. All that in a car that looked like a luxury version of the VW Jetta to the untrained eye.
Like most Maseratis, these cars are rare and valuable. You would probably have to go to an exotic or classic car auction to find one for sale, or you could get lucky and find one on eBay.