1972 Buick Riviera GS 4 55 in.³ stage one engine, original engine and transmission, AC, etc. original color royal blue metallic blue original interior radio – wheels purchased new Manchester, New Hampshire Steve Farrington Buick dealer showroom floor model Possi track rear differential 3.70 ratio gear Factory installation roof, one of only one 1370 built frame off restoration 66000 original miles...