Sideways Ford Mustang Zakspeed Slot Car. RCSW49 is a model of the Group 5 Ford Mustang Zakspeed Turbo. This Roush Ford Motorsort backed car was driven at the Road America round of the IMSA GTP series in 1982 by Kevin Cogan . 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.