Top Plate is the same. Chassis bottom maybe the first version, sec version a cutout exposing the gas tank, a few grams lighter. It was modified with spring assisted shocks on the front, and modified rear shock w/ RC10 shock and rear mounting.
You'll be lucky to find part. If you remount tires w/ truer is probably the only thind you can replace easily. Driveshaft non-existant. Its a dinasour!! Wont get too much for it. maybe $25!!! Engine replaceable & clutch. The rest!!! Good luck!! Its an 1981-3 model.