Sideways Kremer Porsche 935/K2 Slot Car. RCSW55 is a model of the Group 5 Kremer Porsche 935/K2. This Team Willeme, Marlboro/Roneo Vickers sponsored car was driven in the Marlboro Cup at Zolder in 1978 by C Bourgoignie . The adjustable sidewinder chassis features a separate motor mount fitted with a 20.000 rpm flat 6 motor. Most of the parts are supplied by Slot.it.