Gosford Classic Car Museum Located on the Central Coast, NSW, Australia. Displaying over 400 classics and rare supercars from around the world.Articles by Gosford Classic Car MuseumGarage 29/03/161971 Ford Falcon GT-HO Phase III - Onyx Black Only one Onyx Black GT-HO Phase 3 was ever produced by Ford Australia, and it lives here at Gosford Classic Car Museum! At the time of production, this was the fastest 4 door car in the world.