If there's a Honda dealer or parts supply near you, I'd recommend taking your shift lever off your bike, take it to the parts guy, and see if he's got a heel/toe shifter that'll fit. Alternatively, you could get another shift lever from a junkyard/ebay, grind off the chrome, and weld up something on your own. If you have the tools and expertise, that is.
Luke M
Used to have a 1979 CB750L, sold it as a parts bike, now riding a slightly modified 1984 VT700C. Network/Field Engineer. Central OH, USA, Earth, Sol System, Milky Way Galaxy, Universe.