Hello The359, thanks for your reply! I guess you refer to this (no longer supported) reference QV500. 1979's works cars were white and red... That is obviously very doubtful. Please take a look at films and pictures of the 1979 season. Works cars were white and crosswise lined with BMW Motorsport colours (blue violett GLASURIT-BMW 4000, light blue GLASURIT-BMW 5002, red GLASURIT-BMW 353). But the Project Four M1 Procar driven by Niki Lauda (article: initially earning a spot in the factory BMW team in the first round, before running the remaining seven races for Project Four) had a white and red finish (see picture at QV500). all but two of these customer cars were built by the English outfit run by McLaren boss, Ron Dennis. Ron Dennis arrived at McLaren not before September 1980, so McLaren was non-involved in the preparation of the BMW M1 Procars. 
 Furthermore the article states Niki Lauda who finished the championship in first place with 78 points, second placed Hans Stuck just two points behind. Hans-Joachim Stuck gained "only" 73 points...  the German having won twice in his Alimpo entry... Toine Hezemans drove the BMW M1 of Alimpo Sport of BMW Holland in the 1979 season, Stuck was the pilot of the Cassani Racing car (please check here QV500-1979 Season and here Tin-top kings). Unfortunately a lot of mistakes... 

 Moreover I checked the BMW publication Mobile Tradition live 2003 M1 Special – 25 years of the BMW M1: Instead of finishing up at Baur, the pre-assembled M1 cars in this case went either straight to BMW Motorsport or to the renowned tuning companies of Osella in Italy or Ron Dennis in England for final production, with the selection and supply of parts handled by the Munich company. Neerpasch viewed this diversification as a means of encouraging healthy competition in the attempt to achieve the best possible results. Not a word about BS Fabrications... Regards,