1983 Buick Regal Submodel: Base; Engine: 5L V8 GAS Naturally Aspirated; EngineCode: LG4; EngineVIN: H; FuelSystem: CARB; 4BBL;. 1983 Buick Regal Submodel: Estate Wagon; Engine: 5L V8 GAS Naturally Aspirated; EngineCode: LG4; EngineVIN: H; FuelSystem: CARB; 4BBL;.
