Simon
My Dax came with Dax ones - could be worth a call
The Dax used a complete VW Transporter MkII drive shaft complete with it's CV's - but checking against Paul's the Cs have the same bolt spacing as the Ford units.)
I also remember reading up on a Lambo site and they made their own units and they were beautiful - even had a splined sealer on the CV end of the unit to stop oil getting into the CV
Then off course you could try
Tornado
Frank Catt
Chris Cole
Ian