Thanks for the suggestion Marc.
I see the CWM (Canadian war museum) library does contain the earlier Ram I and II manual from 1942, but not the 1943 version for the II.
I think I saw that they have the parts list book as well.
They also have the full? report on the firing tests done on a Ram II turret front plate.
I have a short write up on it from the archives, but nothing detailed. so the full report, one would hope would list armour values for locations.
http://i.imgur.com/QRfuH1h.jpg
http://i.imgur.com/XiTXgjQ.jpg
http://i.imgur.com/y8T1vFZ.jpg
http://i.imgur.com/6PK6YUB.jpg
I'll see if they can make scanned copies and what they charge per page, If they get back to me I'll let everyone know.
(US national archives for example charge .80 cents a page for documents)