The 348ci V8 was fitted with a single four-barrel carburetor and now breathes through a triple two-barrel.
An oil change and lubrication service were performed in preparation for sale.
A three-speed manual gearbox has replaced the previous automatic transmission.
The Bel Air featured X-braced frame construction for 1958, and undercoating has been applied to this example.
The red wraparound steel dash features patterned aluminum trim and houses a clock, a period-style radio, heater controls, and a 120-mph horizontal-sweep speedometer positioned above water temperature and fuel gauges.
The standalone five-digit odometer shows 54k miles, though the actual figure is unknown.
