I have a Shark Skinz tail section that uses the stock seat for sale. Fits my 2007 R6 or similiar year having same mounting points. Easy off easy on mounting.
http://www.sharkskinz.com/shopexd.asp?id=1626
Comes complete with bottom pan, Yamaha Blue paint with whit top and bottom stripe. Over three hundred new and painted; asking $175 shipped to you address.