Probably posted here a million times, but yes this plate is still on the market! Bit pricey...
http://www.regtransfers.co.uk/includes/viewplate.asp?regno=C172%20CUP®price=3995&index=0http://www.regtransfers.co.uk/includes/viewplate.asp?regno=C172%20CUP®price=3995&index=0
Might have to copy/paste that link.