This 1965 Buick Riviera was ordered with the optional Gran Sport package and retains a numbers-matching V8 and 3-speed automatic transmission.The Gran Sport option specified a 425ci Super Wildcat V8 with dual 4-barrel carburetors, hydraulic lifters, and 10.25:1 compression backed by a 3-speed automatic transmission and 3.42:1 Positraction rear differential.Both the engine and transmission were rebuilt and additional updates were made to the fuel and cooling systems.The engine is stamped with LX-398 and the serial number above, which match the car’s identification number and included Protect-O-Plate.New wheel cylinders, brake shoes, and front brake lines were installed.The car was given a repaint in its original Silver Cloud in 2011.The 15″ wheels are mounted with a set of Sigma Shadow whitewall tires.This Riviera was optioned with a power seat, air conditioning, power antenna, tilt steering column, Sonomatic stereo, power windows, remote mirror, “tell-tale” speedometer, power steering, and power brakes.The interior carpeting was replaced due to fading.A new dash pad by Just Dashes was installed during the refurbishments, which also included an air conditioning system overhaul and update to R134a in 2016.The 5-digit odometer currently shows 59,633 miles.