"Use Treat's E-50 High RPM CDI Box":http://www.treatland.tv/puch-cdi-high-rpm-box-p/puch-cdi-box.htm
Connect the BLUE wire from the Green coil to the RED wire from Treat's Box.
Connect the GREY wire from the Green coil to the WHITE wire from Treat's Box.
Connect the BLACK wire from Treat's Box to the KILL switch.
Connect the BLACK/WHITE wire from Treat's Box to the GROUND.
Enjoy sweet RPMs from one cheap, easy to source box. No extra coil needed.