In Germany this ignition from Sachse is quite popular.
http://www.elektronik-sachse.de/shopsystem/product_info.php?info=p45_digital-ignition-zdg3–kawasaki-kz750b1-twin-.html
Otherwise Ignitech from Chech Republic offers some good ignition kits.
http://www.ignitech.cz/en/vyrobky
Good luck !
Cheers, Michael
