last year of 2 stroke

[ArgoGirb67]

anyone know?the parts argo i picked up i figure is a 75(first year HDPE body) or 76(77 they started puting vin # on dash or firewall on a plate)its on the firewall of my 78 4 stroke on the bulge for the driven clutch.

[ArgoGirb67]

PS. prob. gonna wind up fixing the parts argo,just a blown cly.,440 kolher.everything else is mint on it