I've been building my first chop...03 xb9 lightning motor, front end and rear wheel on a Bareknucklechopper frame. Getting close to that first ride but I need to get this thing started! I did the carb conversion, using an S&S shorty e carb. I did a little asking around and found that most people are using the crane hi 4 ignition and the Daytona twin tech ignition. I decided to go with the Daytona but I know I need a different timing rotor cup and a voes switch from a sportster...my questions are what year sportster rotor cup do I need? And i kind of have a grip on what a voes switch does but do I have to run one and what kind should I get it if I do need one?