Okay so my here's my planned engine build so far for my '03 XL1200S, from my research and much-appreciated input from you all: - NRHS Iron-lined aluminum 1250 cylinder kit, as it requires no case boring and includes forged pistons - NRHS stage 2 1200R heads tapped and threaded for dual-plug use - RB Racing LSR 2-1 challenge exhaust pipe - K&N or SE high-flow air cleaner kit About the dual plugs I chose to keep the dual plug setup because I feel that it was a key design feature on the Sport model, so it's more for nostalgia than performance. Although I suppose I could run a bit more compression this way... So here's my questions. I can't remember the name of the company that made it but in one of my mechanic's parts books was an aftermarket ignition for the 1200S and it wasn't HD or Screamin' Eagle. Does anybody know of such manufacturers? Which is best? My planned power/torque output is 100-110 Hp and 90-100lb/ft of torque, but all under 6500 rpm, with as much torque usable at 2000 rpm as possible. What would be a good cam choice? Pushrods? I forgot to mention that I'd like to run between a 10.5:1 and 11:1 CR. Which would me more efficient and effective, Mikuni Carb or modified and rejetted CV? If CV, what would it need? Finally is there anything I'm overlooking in my build? I'd like to thank eveyone who has and is input[ing] advice here. There's no telling what my bike would turn out like had I've not stumbled across this usergroup. So Thank you all.