This should be a sweet commuter/utility ride. I converted my '74 Grand Jubile to a 3-speed back in the mid-80s. Popped off the large chainring and had an old aluminum shell Sturmey Archer 3-speed hub laced up to a 27" Mavic aluminum rim. Put on some ESGE plastic fenders and a Blackburn rear rack and I was good to go. Rode it like that for a few years, then returned to GJ to it's original configuration and sold it. Loved those old Moto's .. I currently have a'75 Grand Jubile, a '72 Grand Record, a '72 Le Champion, a '75 Grand Jubile frame, a '74 Grand Record frame and a '73 Le Champion frame.