The owner said it came off a 1971 CL450. The 1970-1973 share the same model code 320but the frames seem to look the same all the way back to 1968. It might fit a 1974, but they do have a rear frame rail that the earlier models did not have. It is clearly stamped Honda 350/450 so it may well fit CL350 also. If you have any questions about fitment, please email me before ordering and I can take measurements. Very nice original condition. Straight with no bends or dents. The chrome is very good, with just a few spots of corrosion, mostly at a couple of welds. Not a show rack but one most anyone would be proud to have on their bike.