Help needed with sb 318

1983 D250-D350 would work for the major mechanical and minor tune-up/maintenance. The best bet on rebuilding the carburetor if it has to be done would probably be the numbers off the carburetor. I would imagine it being a 1973 model it would have electronic ignition, but if it’s points, 1971 back will work for that. There is one ballast resistor for points and a separate two terminal 1972 electronic ignition and then a four terminal ballast resistor for 1973 on.