Date clash with the Spa 24 Hours leads to longtime Porsche works drivers Michael Christensen and Richard Lietz and youngster Loek Hartog driving Manthey's pair of Porsche 911 GT3 R entries in next week's Sahlen's Six Hours of the Glen.

Manthey’s No. 90 Porsche is set to compete in a livery based on the fictional "Chip Hart Racing" team at the Le Mans 24 Hours this year, as part of the promotional campaign for the forthcoming F1 movie.