The daisy wheel clamps between the prop shaft and the diff. I mounted the speedo bracket to the lower part of the diff where the bracket that hold the diff in place is bolted to the diff (make sense?).
The curve in the diagram follows the curve of the lower side of the diff, keeping it nice and sturdy. Don't have any pics to hand but could take some later tonight, if you still need some.
Cheers,
Tony B
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http://homepage.ntlworld.com/tony.breski