Clive - the plans I have are from September 1977 Military Modelling. From the research I have dug up (from your website BTW), the only version that can be made without serious modification is the prototype/early production with the headlights in the Series II/IIA position - I just need to get my head around moving them...
Ironically, the Shorland was my first conversion when I was 14, on the Italeri Series III, how I wish I'd kept it!