This Audi 90 Quattro was extensively modified by the current seller to replicate the wide-body IMSA cars of the era. The entire build is documented here on his site at AudiMotorsport.se, including photos showing the construction of the wheel fans, fender flares, and V8 engine. Find it here on Blocket.se in Sweden for 280,000 Swedish Krona (today ~$33,500 USD). Special thanks to BaT reader Tim M. for this submission.

The site shows galleries from every stage of the build. The shot below shows the car just after the decals were added, but before the wheel fans and rear wing were installed.

Here is the car that was started with… this guy had some serious vision:

Here is a photo of the flare construction in progress… they are definitely metal and the photo has a date stamp of 2004, which might be when it was built.

More flares:

Below is a shot of the wheel fans. They look to be carbon fiber, and it is difficult to tell whether they are functional in the same way the originals were.

The listing says the car has a 5-cylinder turbo, but the build photos clearly show that it has an Audi V8. We’ve seen this engine swapped into some Sport Quattro clones, and this seller has also built those, so perhaps that explains the choice.

And here is the required veiwing of the real IMSA car from 1989: