Not absolutely sure if you guys caught this or not, as I'm very late coming into this game, but our British friends have some contributions on their site as well.
http://www.forzamotorsport.co.uk/showthread.php?t=7196
It might be in this thread somewhere, but I lack the patience to scan through 10 pages. If it is, I apologize and this is a shameless bump of it. If not, then enjoy!