To clarify the engine situation please visit
www.aronline.co.uk then in the side menu enlarge the
'Facts and Figures' sub menu, then '
Engines' and click
C-series. (Sorry but I was unable to copy a direct link to this page, hence the lengthy explanation.
I also bet that if you find this thread interesting, you'll spend quite a bit of time wallowing in the nostalgia on the aronline web site!