Dear Luis;

I used a duel coil system in the 'Fifties' which used a cap from a 12 cyl.(fire truck)engine where every other contact was used.

To quote the movies; "take your passion & make it happen."

BTW: Harley Davidson(s) fire every crank rotation where one spark is "waisted" during the exhaust stroke of the other cyl.

Good luck, John M.......

John M., I.I. #3370

"There are no shortcuts to any place worth going". -Anon