S was powered by a 3.0 L engine with an 8-valve SOHC cylinder head (from the 944 Turbo S) and 944S2 style engine block. Tests conducted in 1993 returned a 0 to time of 4.7 seconds and a top speed of . The engine generated at 5,600 rpm with a maximum torque of at 3,000 rpm. Only 14 were produced in total and only for sale in mainland Europe. Motorsport 968 Turbo RS Between 1992 and 1994, Porsche Motorsports Research and Development built and provided a full "Race" version (stripped out 968 Turbo S) for Porsche's customer race teams. The 968 Turbo RS was available in two variations; a version using the K27 turbocharger from the Turbo S, which was built to the German ADAC GT specification (ballast added to bring the car up to the 1,350 kg minimum weight limit), and an international spec version which used a KKK L41 turbocharger with the engine rated at and a reduced weight of 1,212 kg (2672 lbs). The interior of the Turbo RS features a single racing bucket seat with six point harness along with a welded in roll cage required for it to be eligible. Other modifications included a modified 6-speed manual transmission having altered gear ratios and a racing clutch along with racing suspension. Only 4 were ever produced as privateer racing teams showed much interest in the 911 Carrera RS 3.8 race car offered at the same time. These are the rarest 968s ever produced. In the ADAC GT Cup, the Joest team achieved fourth place in the Avus race in 1993 with the Turbo RS driven by Manuel Reuter. In the BPR, the car was driven at the 4-hour race by Dijon in 1994 to sixth place which was its best result in the race series. The Seikel Motorsport team used a 968 Turbo RS at the 1994 24 Hours of Le Mans, driven by John Nielsen, Thomas Bscher and Lindsay Owen-Jones. After 84 laps, the team had to end the race prematurely after an accident. Production figures for all 968 variants The 968 was Porsche's last front-engine vehicle of any type before the introduction of the Cayenne SUV in 2003. Its discontinuation in 1995 due to poor sales coincided with that of the 928, Porsche's only other front-engine car at the time. The 968 was also the last Porsche sold with a four-cylinder engine prior to