Sorry to be late on the reply, but I only just discovered this interesting forum.
But in the interests of accuracy
"like saying the Merlin could fly to 30 West if it had a refuelling probe - neither actually exist on production models. " take a look at
http://www.gkn-whl.co.uk/gallery/eh1...es/eh-0034.jpg
and have a guess at what that pointy thing on the front of the Production RAF aircraft is.