This 1967 Iso Rivolta S4 is the third we have found in the USA and is described as needing some attention after sitting for 20 years. The seller indicates that the entire fuel system has been rebuilt, and the engine is said to run well. These Guigiaro models were produced as the S4 before later becoming the Fidia. Find this one here on eBay in Daytona Beach, Florida with reserve unmet.

The body appears to be reasonably straight, but we suspect a color change given the dulled red paint. The seller points out that the floor pans have some rust issues that need addressed, but doesn’t give much other detail about the rest of the car. The wheels are some of our favorite Italian alloys, and the same ones we like to find on IR-series Rivolta coupes.

The interior is said to need the carpeting redone in some areas, and otherwise needs a thorough cleaning. The upholstery and dash look like they have held up well, and the dash looks to have remained uncracked. Finding trim pieces would prove to be difficult if not impossible, but this one appears to have retained all its hardware.

The 327 Corvette engine with Borg-Warner 4-speed make this one easy to maintain, and the seller indicates it runs very well. This set-up makes neglected Isos much cheaper to resurrect than Lamborghinis and Maseratis from the same era.

Isos have their own following and it is interesting to watch these odd sedans to see if the Grifo appreciation at the top end will carry Fidias and S4s along with them. We’d try to dig in to discover what the original color might have been and factor in both the rust repair and a quality re-spray. Silver wheels and a medium blue metallic and this car is well on its way aesthetically.