I'm home now. I drove over 2000 miles.
I don't think I will ever be attempting a journey that long in a 25hp car again.
I had a couple of scary moments, like when the 360 stalled in East St. Louis at 4am and refused to start, or when I nearly got killed because a pickup driver in Atlanta wouldn't let me into traffic and I almost ran into the side of a bridge (those tiny drum brakes work a lot better than I had imagined - thank God).
Over all though it was pretty fun - though very, very, very tiring (my legs are cramping, and I can almost still hear the engine droning and the gears whining) - got lots of looks and questions, lots of people taking pictures.
Anyway, how about some pictures?
Filling station in Kansas
Engine apart in Kentucky...
PS: thanks for the suggestions, the last several posts by me were made by my girlfriend to whom I was relaying news of my journey.
The performance problem turned out to be due to the distributor, after the last photo above I took it apart and saw that the advance mechanism was extremely dirty and probably hanging up. I cleaned it, and the performance went back to normal with no backfiring and good acceleration.