Can Anyone Help

[GN UK]

Hi

I am trying to find a Buick Power Source Book.
Being from London England I am finding it near impossible to get my hands on one.
I am rebuilding a new engine with a friend and we require the tolerance’s which is why we need the book.
If anyone has a book they no longer need (unlikely I know but worth a try) I have a paypal account or I would even send US dollars in the post just to get the book.
Or if anyone would know where I could find one it would be much appreciated.

Thanks
Dan