Carol - it looks like there's been some interesting mods done to your car in the past.
It appears that there isn't a heater box under the black metal plate in the bulkhead. Are the pipes i can spy in your engine compartement, and the pivot to the left hand side, a heater upgrade of sorts ?. It would be interesting to see a view of the engine bay as a whole.
Also, some modification appears to have been done to the brake and clutch circuit as there is 2 aftermarket resevoirs in the place of the single unit common to our cars.