the IMSA GT Championship. The car carried sponsorship from Anheuser-Busch Natural Light beer, which had been introduced the previous year. Non-Italian 131 variations SEAT 131 The SEAT 131 started its production in early 1975 in Barcelona with two versions initially offered: SEAT 131 L, featuring rectangular front lamps, 1,438 cc OHC engine and 4 speed gearbox and SEAT 131 E featuring four round headlamps, 1,592 cc DOHC engine and 5 speed gearbox. The range grew up in 1976 with the SEAT 131 Familiar, estate version offered with both engines. In 1977 the 131 Automatico (Automatic gearbox) was released and the following year a very short production of the SEAT 131 CLX 1800 was offered. Spain was the only place where the estate 131 was built, but in the export these were labelled Fiat 131 Familiare. In 1978, the SEAT 131 evolved into the SEAT 131 Mirafiori/Supermirafiori (Panorama for the estate versions), with the same changes as seen on its Italian cousin. The engines remained largely the same, but a 1.8 litre Diesel Perkins 4.108 engine was available in 1979. A further CLX special edition was launched in 1980. Available only in metallic silver or metallic bronze colours, this 131 CLX had a 1,919 cc engine, developing at 5,800 rpm. In 1981, the Diesel version was developed with a new Sofim engine. This 2,500 cc engine was much more powerful than the Perkins version (72 hp against only 49 hp) and was one of the most successful taxis in early '80s Spain. In 1982, the SEAT 131 changed again, gathering all the body changes seen on the Fiat 131 series 3. The 131 was now available in CL, Supermirafiori and Diplomatic versions. The Diplomatic was the top of the range, with a 1,995 cc engine and features such as power steering, power windows or air conditioning. The Panorama versions were the cars chosen by the "Cuerpo Nacional de Policia" (Spanish Police force) as patrol cars. In 1984, the SEAT 131 range was discontinued, without a direct substitute and the Fiat Ritmo-based SEAT Málaga took its place in 1985. Murat 131 Turkish Automotive Factories Incorporated (Tofaş) in Turkey started the production of Fiat 131s built under Fiat license with the Murat 131 (Turkish: Desire) nameplate. Later, Fiat 131 based "Bird Series" were developed and built in Bursa, Turkey. The base version of "Bird Series" was named as Murat 131 Şahin (Turkish: Hawk),