You will want the Ignitor 1 the original since you have a 6 volt system. If it were 12 volts it would be the Ignitor 2. In that case, you wouldnt need the ballast resistor and can use your stock coil.
In a few months there will be a brand new solution using the stock distributor, but Pertronix has a very good track record and what I would probably do.
