drill two holes at top of motor cone inline with motor stick. the motor stick length will very depending on weather you use a gearbox or out runner.. for inrunner it will be about 3 1/4 inches(adjust as needed) and make sure to insert motor stick in all the way to back flush with rear of cone you can angle stick to right slightly.. a couple degrees for better hovering. secure motor stick with 1 screw at this point(you dont need special screws.. any small screws that are slightly shorter than thickness of motor stick will work) put gearbox or outrunner on. trial fit cowl to make sure you have the clearance you want between prop and cowl if its to far out from cowl cut motor stick slighly shorter on motor end until its rite. once you have clearance to your liking secure motor and secure second motor cone screw. connect esc wires etc and your done.