The Cab-Over-Engine G506 Symbol NX was not the 'crash truck' (those are NZ and YZ trucks) its just a fire truck and I also don't think they were standard chassis.. the wheelbase is MUCH longer (175 vs 135) and sheet metal was supplied by Kidde or Howe.
Definitely rare, but unless complete not super valuable.
The first link is dead, and the link for the second red fire truck is heavily modified and missing TONS of parts. I doubt any of the original apparatus is there. Plus with all that added on weight on the front axle its gotta be torn up.
