This exceptionally rare Italian muscle car is powered by a V8 from a Pontiac G8.

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      Manufactured between 1962 and 1970, the Iso Rivolta aimed to merge Italian aesthetics with muscle car power. Due to its limited production, the model is an unusual candidate for restomod modifications. Nonetheless, a 1967 version featuring a V8 engine sourced from a Pontiac G8 is up for auction on Bring a Trailer, complete with stunning photographs, prompting us to discuss this stylish vehicle.

      Depending on your perspective regarding authenticity, this 6.0-liter coupe may be seen as a natural progression in the Rivolta’s development or an excessive alteration. Bring a Trailer states that 797 units of the Rivolta were produced, raising the question of whether such a rare vehicle should remain unmodified. Some might argue, "absolutely not!"

      Originally, it came equipped with a 327-cubic-inch (5.3-liter) Chevy V8. It has since been upgraded to a 6.0-liter V8 from a G8, connected to a Tremec 6060 six-speed manual gearbox. This was not just a straightforward engine swap; the sale includes more than $400,000 worth of receipts documenting all repairs and modifications made during the process. The engine features a cold-air intake system and distinct Iso Rivolta-branded valve covers.

      Numerous components have been repaired, replaced, or enhanced. If you inspect the engine bay, you'll notice an aluminum radiator. Underneath, there are Heidts Superide II independent front coilovers along with a custom Jaguar-style de Dion rear end featuring adjustable shocks. The auction listing mentions that the floor pans and transmission tunnel were replaced in 2015, coinciding with the necessary underbody modifications for the upgraded suspension. Additional sound-deadening material and a modern air conditioning system that is remarkably well-integrated should enhance cruising comfort compared to a stock version.

      With Grigio Silverstone from the Ferrari color range and Paloma Cork leather upholstery, the aesthetics are completed. I appreciate that this Rivolta does not overtly indicate an engine swap—there are no extra vents or large air intakes. The car retains its original bumpers and 15-inch wheels, and all trim pieces appear to be intact. The dashboard continues to display the original-style analog gauges.

      While it is undeniably elegant, and significant time and resources were invested in this project, does that make it acceptable? On one side, at least it still utilizes a General Motors engine. It’s plausible to envision Iso opting for the G8’s V8 had they continued manufacturing cars into the late 2000s, whereas seeing a Ford Coyote V8 in the engine bay would be rather peculiar. However, the modifications would be challenging to revert. Ultimately, the market will determine whether this is a remarkable restomod or a costly way to compromise a rare vehicle.

      Current bidding stands at $45,000 with roughly eight days remaining in the auction. For context, this specific vehicle was sold by Bring a Trailer for $210,000 in February 2024, and a 1966 Rivolta IR 300 with its original V8 engine and four-speed manual transmission fetched $111,000 in May 2024. Perhaps the forthcoming owner will add more mileage to this car.

      If this price point isn't suitable for you, you can still enjoy a brief experience through a test-drive video recorded about a year ago. Give it a watch!