Rare options LOL
While I am a huge fan of early As, this one is overpriced as usual for a project car that needs a lot to be completed. I also agree that the late A-body single piston disc brakes are a good upgrade; they are the same system I have on mine. Still, it is way overpriced for the work that it still needs. Rare and original is a complete laugh.
Rare would be the 64 I had years ago with all of the Formula S options before Formula S was an available model. I don't claim to be an expert on these models, but it had a quick ratio steering box, early day/night mirror, and tachometer since it was a 4-speed car. Unfortunately the drivetrain was long gone and that car needed inner and outer quarters so I took the 4-speed stuff out of it and traded it away for a narrowed Dana with aftermarket axles and a powerlock.