This most likely the article you are after: Driver Only Operation of Powerline 830 Class [color=#000000][size=3][font=Times New Roman]AMRM #179[/font][/size][/color] April 1993 p28
Thanks but that's a conversion of a Powerline 830 class to a DA. Similar, but there appear to be significant differences between the DA and PL classes particularly around the front cab window.
I specifically recall the article was about the PL Class. May have simply being an article about the PL Class rather than details of a conversion to the model. Can someone with an AMRM Index look up "PL"?
Afterthought - however the article on the 830-to-DA conversion could still be useful because it does detail the changes to the mechanism (effectively turning it around) because of the now lowered leading hood.