First things first, this 1973 Buick Riviera is a powerhouse. That’s why Streetside Classics is excited to announce this fully custom luxury coupe for sale. This example is the perfect classic with a stunning color combination, thrilling V8 power, and some added goodies to boot. Although it has an original numbers-matching motor, the big 455 cubic-inch V8 motor was rebuilt with dual-quads and a supercharger on top. Apart from the monstrous power it delivers, this Riviera also provides several comforts that you can enjoy on every ride.