Honda SMX kph to mph overlay for speedo

[xbootneck]

Just joined the forum as I have bought a Honda SMX 1997 version in silver. Unfortunately the dealer who sold it to me was a bit short on the vehicle description neglecting to mention that someone had removed the airbox, completely and also the rear wiper for the enormous tailgate. I have managed to source these items from smx specialists but am having trouble finding an overlay for the speedo which is in kph only! Anyone out there know where I could get one, I don't really want to start writing on the dial with a felt tip pen or anything like that as it would spoil the look of the instrument panel. Many thanks