Thanks, Dirtdrop. I also like the idea of keeping the bike franco-centric. It's important the machine stay component-compatible. The H. Jubilee derailleurs are supposed to be incredibly light and elegant, but also problematic in shifting. The Simplex LJs sound like the right fit. The Mafac Competition brakeset also sounds like a good call if the original TdF was outfitted with such. Can't be sure if the Campies that come w/ are Valentino. Any advisement? Is it wise to retain the originals? What's best on the light-side of your hub-prescriptions?