GT Porsche 911 RSR 3.0 #76SCA C4211 Scalextric Porsche 911 3. 0 RSR Jagermeister Kremer Racing The Porsche 911 3. 0 RSR replaced the very successful and now iconic 2. 7 RSR as Porsches most potent GT machine in 1974. With wider arches, the big whale tail rear wing and massive rear tyres the performance intent of the 3. 0 model was there for all to say. The Kremer racing team was just one team that took these special cars and turned them into race and championship winners.