yeah chalfa is right, get on ebay and score some DOHC CB750 coils or goldwing ones, or you can use 2 harley coils (thats what im running)

And once you get them you can put what ever length wires on them you want.

I have my coils mounted under the rear of the motor, just under the rear mount, it's a tight fit but they dissapear
"Done? Yeah it's done......."

My Bike