1965 Buick Skylark Grand Sport for sale in Maine. The Skylark GS was Buick's GTO. With a big four barrel V-8 the tested by Motor Trend in 1965 and it had a top speed of 116 mph. The 1965 Skylark was built by Buick as a Coupe, Hardtop and a Ragtop. The base engine was a 400 cubic inch V-8 rated at 325 horsepower. Transmissions available were a three speed, four speed and Super Turbine 300 automatic. Factory price was $2,805, wheel base 115 inches, 0-60 mph in 7.8 seconds and the 1/4 mile in 16.6 seconds at 86 mph. Restored prices range from 17,000.00 to $30,000.