Description
SCS Professional Series Quick Change Gear Set #37 H85 BLK #4240 wont fit 1987 & WEI7155 #4240 wont fit 1987 & later Also available is a 150+ page full color step by step manual that also covers many alternative wiring options and each wire is custom printed with the circuit identification as well as using GM color codes for easy installation 11 Ratio 6 APBA and International Offshore Boat Racing