Interesting bits on ebay..
 

851 Corsa carbon tank

http://cgi.ebay.com/ebaymotors/ws/eB...tego ry=10066

851 corsa ally subframe (Is this guy right it wont fit Rob??!)

http://cgi.ebay.com/ebaymotors/ws/eB...tego ry=10066

Cheers
Nat

Both of these could be made to fit, but you'd have to heavily mod the seat frame to used your tank and seat.

Rgds, Rob

Someone really ought to give this seller a geography lesson!
According to his listings, Ducati MV and BMW are all of Asian origin.......
Mind you, I find that poorly listed items often go for a song so it's not all bad.