Does anyone the know the answer to au73's 43S vs R43S question? I've been able to find the needed 44S' at swap meets for mine but have wondered if an AC R44s would work for the time I can no longer find the correct NOS plugs. If I recall the "R" is for resistor and has something to do with radio interference? If it adds more resistance in the coil to distibutor to wire to plug total resistance, will it work the same as a non-resistor plug?