Electronic Distributor Conversion
The G202B is fitted with an electronic Denso distributor (P/N 19060-87704, 100291-3670), It has good benefits when retrofitted to the CB23 and CB60/61 in the G11, G100 and earlier G202 models. Note the advance weights in the CB60/61 may need to be swapped and the vacuum advance diaphragm also swapped.
A transistor ignition (T.I.) transformer coil must also be used. TI coils have a high turn ratio and low primary resistance for low input trigger voltage and higher current resulting in high output (spark) voltages.
Note that the existing ballast resistor becomes redundant.

G200RS HCE Coil and Ignitor Combo (just for info purposes)
Retrofit CB60 dizzy. This one uses a reluctor wheel from a Handi 846cc ED10 engine pressed onto a turned down standard CB points type rotor and an ignitor/pickup coil from a Suzuki G13A dizzy.The TI coil is from the Handi too. If you attempt this you will need a file, a 3/16" drill and lathe/machine shop.
Be aware the Mira dizzy rotates counter clockwise while the CB23/60 rotates clockwise, so you need to flip the reluctor wheel before pressing on the CB rotor shaft. Like wise the spoke (tooth) that lines up with the edge of the flat on the Handi rotor needs to line up with the opposite edge of the flat on the CB rotor shaft.

Note: due to different colour codings on the electronic distributors an easy way to test which wire goes where is to:
1) set your multimeter on diode test;
measure between the two dizzy wires and when you get about 0.95 as a reading your dizzy +ve is the red (+ve) probe and the signal is the black (-ve) probe.
2) if you don't have a diode test function, set the multimeter on ohms. When you get a reading of about 3 meg ohms the red probe is on the +ve of the ignitor and the signal is the black probe.
3) or you can carefully remove the ignitor from the dizzy, remove the plastic housing (it's delicate) and identify "B" for battery +ve and "C" for coil -ve signal.
CB60/61 Vacuum Advance/Boost Retard Curves