I thought that the only Frontera that came new with the up pipe was the the last one imported here (Mk11) which I think was sold in 1978. Very nice bike they were too. I shared riding one (a 370) in a 6 hour Pony Express in Northern NSW when it was new and found it had a very forgiving motor, great handling and was quiet. It had S&W Pro Stroker shocks but was otherwise standard. Thanks again to owner Russell Duncan for sharing such a nice bike.