Andy
check out this FIA link for minimum weights in Tourng Cars Group 2
http://www.fia.com/resources/documen..._Art_260_a.pdf
It contains a statement at the end of the table shown that says "In no case the scrutineers may take the weights figuring on the recognition forms into consideration." And your 2 liter correlates to 845kg = 1859 lbs.
Can this be what you're looking for?
Ken