H/G-Body Wiki

The H platform, or H-body designates a General Motors front-wheel-drive full-sized car platform introduced in 1986, and in most respects identical to the front-drive C platform introduced for model year 1985. Originally available in both 2-door and 4-door versions — the latter was more popular and two-door models dropped by 1992. Engines were predominantly the Buick's 3.8 liter (231 cubic-inch) V6 engine and later, GM's Buick 3800 V6; in naturally aspirated and supercharged variants (from 1991 to 1999).