@cruiserdan and I were chatting BJT/FJJ today and I remembered I had seen an article back when that video first launched.
japanesenostalgiccar.com

Toyota to restore rare Land Cruiser FJJ fire engine
Toyota has begun restoration on a very rare Land Cruiser FJJ. Introduced in 1954, it was first Land Cruiser to bear any kind of “FJ” chassis code. Originally designed for use as a fire …