Yours does look gorgeous & congratulations upon it & its floor mats.
Hope it doesn't take too much to sort, Dad spent a surprising amount sorting his '66 Lancia after tyres, repainting wheels, clutch, oil seal, re-coring radiator...
Sadly my convertible is a complete basket case with a Datsun 1200 drivetrain crudely shoved under it... though it did come with most
of an original drivetrain...
And I also got myself the striped & rusted remains of another shell if I really
wanted to play around
and it gave me another necessary wheel & hubcap or two.
Though I must admit assembling the remains of my engine & getting the missing components still frightens me, making it too far to easy to distract myself with stray 1st gen Accord & Prelude people seem to give away.
There are Honda car clubs for SA, Vic, NSW & Qld, most going back further than the Civic though it must be admitted that they are mostly social clubs with newer Honda inevitably dominating. There was a Honda S register that disappeared many years ago.
With the launch of the S2000 Honda Australia also created separate Honda Sports Car clubs specifically for S2000 & Integra Type-R... A different audience. Of course there's numerous general & specialized internet Honda groups too.
There's also an "S" Yahoo group that very active.
Sorry I can't speak for numbers but have seen 3 S600 coupe for sale in Melbourne over the last 4-5 years from stripped shell to neglected toy, & at a guess there's 8-9? other Coupe & Roadster associated with the Victorian Club; though you don't see them about.
'79 Accord, '89 CR-X SiR, '81 Prelude, '74 Z360 H/T, '71 Z360, '64 S600, '75 Lancia Beta.