You can use the wonders of the interweb and it says: FD spit mk3 and GR reconditioned....
Cool, thanks, this interweb things pretty good huh?!
Looking again at the 'box in the car, it seems to be a recon. Vitesse "HB" gearbox which surprised me...did the 6-cyl engines have the same gearbox (or shell, at least) then?
Would the internals of my spare box, being from a Mk3 Spitfire, make it a better box?