The pointed tail was fitted to most later MkIXs all MkVIIIs and most MkXVIs. The Griffon engined MkXII had a MkVIII tail and rudder (being based upon either a MkV-fixed tail wheel models, or a MkVIII-retractable tail wheel models) but all other production Griffon Spits had a much larger fin and rudder fitted.
You can always spot a Griffon spit by the shape of the nose. It is much longer with a much bigger prop spinner and two very large rocker cover bulges running along the top of the exhaust stack. All but the MkXII and MkXV had a five bladed rotol or six bladed contra prop.
I believe the BBMFs IX MK356 has just been refitted with a pointy one similiar to ML417 to replace the rounded one (such as on MK732), and being in the same sqn markings as ML417 (as 21-V) now looks almost identical. Shame they'e on opposite sides of the atlantic now...
Charlie
That's right Charlie pal, they replaced the standard rudder with one from the two MkXVIs that BBMF have stashed away in the back of the hanger. I saw both these "21" Spits side by side at Duxford a few years back and it is a shame that TFC decided to sell it on. The UK Spitfire population gets a bit smaller every year and I hear rumors that at least one more will be crossing the pond this year. Very sad
