formed Fisher Guide Division acquired the complex. Around 1987, the Chevrolet plant was taken over by AC Spark Plug and became AC Spark Plug Flint West. In 1988 it became AC Rochester Flint West, and in 1994 AC Delco Systems Flint West. In early 1995, it was renamed Delphi Flint West. Around this time, the plant complex (known as "Chevy in the Hole") began to disappear. Among the first plants to go were the truck garage, Plant 5 (formerly Engine Parts) and the administration building. This continued until 2004, when Plant Four (which had reopened some years after it initially closed in 1984) shut down and was demolished. Plant Four's last products were generators and fuel filters. The only remaining buildings are Building 35 and Plant 38. Building 35 (originally housing new-car delivery and, later, heat treatment) was donated to Kettering University (originally General Motors Institute) in 1996. After the addition of another floor and a new facade, it houses the university's Mechanical Engineering and Chemistry Center. Workers in Building 35 built the first Corvette prototype, around 1953. Plant 38 (the Die and Engineering Center) opened in 1967, is still operated by GM and is known as Flint Tool and Die. According to GM’s website, at Flint Tool and Die there are 228 hourly and 25 salaried workers. The rest of the land is being redeveloped to be turned into a public park for the City of Flint. The park will be called "Chevy Commons". Flint Assembly Division/Flint Truck Assembly Opened on Van Slyke Road in 1947 for car and truck assembly, in 1970 Chevrolet Assembly converted to truck-only production and GM created the Truck and Bus Group in 1981. The GM Assembly Division then transferred the Chevrolet Flint Assembly plant to Truck and Bus, which was later renamed North American Truck Platforms and then the GM Truck Group. Now known as Flint Assembly, it remains an important operation for GM; it builds Chevrolet Kodiak and GMC TopKick commercial trucks, and Chevrolet Silverado and GMC Sierra full-size pickup trucks. In December 2004, GM announced it would invest $150 million into retooling at this plant. After a maximum of at least 8,000 workers at Fisher 2 and Chevrolet Assembly, 1,862 hourly and 185 salaried employees work there. Events at this plant during the late 1970s are chronicled in Ben Hamper's 1991 book Rivethead: Tales from the Assembly Line. Flint Frame and