Thanks for the link, I never saw this one. He has some nice straight cut gears I see, but I think it's just an OE casing painted, the end cap looks interesting - I can't tell what it is or why he has done it:
http://www.zica.it/galerie.php?lan=e...=861&&galid=18

If you can find out more it would be great!

I don't think this is sequential, there is a guy in Andorra who races a 'grale with a sequential 'box - Colotti or Bacci (can't remember which) It was very expensive and took many hours to convert.