Takes me back! I had an S600 Coupe (the only one Honda Motors imported into UK) and an S800 ragtop, years and years ago.
The S600 became very special. I had it for 10 years, and it was almost part of me. It grew (genuine Tech-Del) Minilites, Koni dampers, disk front brakes (from an S800 mk II), a very special 700cc engine, a Honda Competition 5-speed all-crash close-ratio 'box and stiffer torsion bars up front and coils at the rear.
It was a delight! I used in in all kinds of competition, and it would outrun all but the hottest Spridgets. It was good for 100mph in 4th, and whatever was left in 5th - not much, but not bad for a 700!
I wish I still had it . . but I still have the steering wheel, though cracked and splintered, and the workshop tool kit.