3.
4 synchro gearbox, outer - Spitfire MKIV
From chassis number FH3 to FH64995 and from FM1 to FM28000 (November 1970 to December 1974) - gearbox code: FH or FK. Characteristic: 3 rail type
4.
4 synchro gearbox inner - Spitfire MKIV
From chassis number FH3 to FH64995 and from FM1 to FM28000 (November 1970 to December 1974) - gearbox code: FH or FK. Characteristic: 3 rail type