GMPartsGiant.com offers the wholesale prices for genuine 1987 Oldsmobile 98 parts. Parts like Automatic Transmission Case, Drive Link, 4th Clutch & Accum are shipped directly from authorized GM dealers and backed by the manufacturer's warranty. Parts fit for the following vehicle options. Engine: 6 Cyl 3.8L. Model Code: REGENCY 4 DOOR, REGENCY BROUGH 2 DOOR, REGENCY BROUGH 4 DOOR.