Yes, somebody has used a Countach to go racing !
This heavily modified Lamborghini Countach was based on a 25th Anniversary edition, because this was the the most appropriate version to built a race car from. The standard rear spoiler was replaced by a racing type unit, which was completely adjustable, the air intakes behind the doors are redesigned to allow a better air-flow into the engine compartment. This V-12 was reworked to produce over 550 Bhp, combined with a lowered suspension and 18 inch rims with racing slicks, this car was a real performer.
The side glass windows were replaced by Plexiglas panels and just behind the doors, in front of the air intakes, two race-type fuel cells were mounted with racing fillers. The front hood now incorporated an air-extractor and the front spoiler was drastically lowered to obtain down force at high speeds, a top speed wasn't published on this specific model, but without most of the creature comforts in the interior, just one race bucket, and the glass normally used, this one should be able to attain more than 350 Km/h. No official information was found on this car, but I did locate a 1/24th plastic model kit from Fujimi. The finish was rather good and as a display model it was very suitable, but unfortunately the car was in fact only a standard 25th Anniversary model with the special Rain-X decals included. To really make the car look like the exact race car you would need to rework the entire front spoiler and make small alterations to the rear wing.