I think that's an R440 because of the points. I believe the P100s were issued from day one with the solid-state ignition, but
I don't know these models very well (I think some used a solid-state with a trigger module).
In regard to the muffler/starter/top cover, you'd probably be best off to consult the IPLs for the P100 and R440. I'm attaching them
here.