To remedy the lack of power of SP1 and SP2, the plant developed a prototype SP3. It was a water-cooled SP2 with 1.8-liter inline four-cylinder engine, a compression ratio of 8.5:1, twin carburettors and an output of 100 hp SAE; the engine came from the Brazilian version of the VW Passat TS.
At the plant itself, the project did not get beyond an early stage of development, but they did provide a prototype to the large Volkswagen dealer Dacon. Differences from SP2 externally were wheels of size 6Jx13 (the Passat), the air intakes with discrete slots on the rear side window, and a broad black grille placed above the front bumper. The engine was in the rear compartment including the compressor for online slots australia air conditioning. At the front however, sat the radiator. Inside, leather-trimmed Porsche style seats were installed (Dacon was also the import agent for Porsche up to 1976). Transmission, suspension and brakes (front discs, rear drums) corresponded closely to SP2, but upgraded, adjusted and strengthened where necessary. The prototype reached a top speed of 180 km / h.
Press Release: Quatro Rodas 08/1976
Thanks to Marc Poulton for translation