Looking for hi res drawing

[Jordan]

Hi Folks,

I have this drawing of a widecase engine.

www.flickr.com/photos/28257637@N08/35499080400

I'd love to have a higher resolution version, but can't find one.

Any leads?

[Moto Chuck]

I have some wide case parts manuals and it does not appear to be from them.

The drawing is familiar but I don't remember where I have seen it before.

[Jordan]

Interesting that angular contact main bearings are shown in one view.
These are normal for V twin Ducatis, but I've never seen them on actual singles.