Thanks Thuban, I thought this was the case. I have read threads in the past about using HEI modules but the issue is always the need for an advance mechanism. A few comments back there a reference to HEI (Toyota) being cheaper than Boyer, but the Boyer Units have electronic advance programmed in so the installation/conversion is fairly easy. Straight out ignition units without advance are very common and cheap. It would be nice if we found an electronic advance unit for the SX which could be coupled to any igniter of our choice. The XS points system will easily adapt to most igniters.