Brendon - that's a 3/4T, bigger trucks didn't have that kickup over the rear axle - the Holden-Chev trucks were made in Canada, final assmebly in AU - some pieces may have been AU made, but the main differences from the US trucks will be the same as Canadian, and CDN trucks had some previous year features compared to US, and the 'made for export' ones may have even been a place to use up 'left overs' - the "2 ton" on the tag is GVW - ie: truck weight, not capacity, your truck is not a "2 ton"
Bill