Beautiful bike. Did you see the mounts from VO? This way you can keep the original levers, but on a different mount. http://store.velo-orange.com/index.p...22-2-23-8.html I am getting them for my sons Miyata912. He is not fond of the downtube shifters.

If there is braze ons on the downtube you also need http://store.velo-orange.com/index.p...-adjuster.html