If memory serves, the Mirage was roughly comparable to the Peugeot A-08 - non-QR version of Atom/Normandy/Maillard hubs, unbranded hi-ten tubing, surprisingly nice ride. I rode my first clunker challenge on a '75 Motobecane Grand Touring, which had SunTour derailleurs, a cheap Shimano Tourney alloy crankset and q/r equipped Normandy Sport hubs on (mismatched!) alloy 27-in rims. That one made me re-evaluate 70s basic bike-boom stuff and appreciate it for how nicely they ride, how little fuss they are, and how forgiving 27 x 1 1/4 at 70 psi is on so many surfaces. Have fun with the Mirage, it has great mojo!