More than likely you are referring to GTR #05R campaigned by BBA Competition and Jean-Luc Maury-Laribiére wearing it's Tuiles TBF livery.
More photos and info can be found here:
http://www.automotiveforums.com/vbulletin/t118125.html
I don't believe this car has been offered for public sale though.
>8^)
ER