NGK plugs, K+N air filter (even better would be cold air intake with the K+N), K+N (the K+N oil filters are not cleanable like the air filters though) or WIX oil filter, personally I don't like the Fram brand ones because they use cardboard end pieces. I only know of the stock fuel filters but I also added a clear one just ahead of the carb, I just have the stock cap, rotor and wires although I've wanted to upgrade to a MSD 6AL Ignition Control and a MSD High Vibration Coil.