Cheers for all the measurements.I Think I have everything now.
Ill probably put some 9 or 10mm holes in the back plate for fixing.

Any idea why the 36mm clutch hole is 52mm from the edge and not central (50mm)
I thought I had made a mistake when i welded my pivot brackets on and the hole wasn't central. Checked the guide and it definitely says 52mm.

I had a quick browse on AK automotive's ebay page. They have some good stuff at reasonable prices. Ill keep that one in my favorites.

Andy