Most parts are still available. Points are #30547A, condenser is #30548A and coil is #30560A. If you don't have the stator plate, to which these parts are mounted on, you should be able to find a used one at most repair shops. Here is a manual which should help you when you get to reassembly.
http://www.mymowerparts.com/pdf/Tec...P-4-CYCLE-L-HEAD-FLAT-HEAD-ENGINES-692509.pdf