You would have to go through the dealer to get the Challenge suspension as the Challenge cars are tuned by Ferrari.
There is a member in Singapore that did this:
http://www.ferrariforum.net/forum/viewtopic.php?t=3649
Actually it looks like you posted in this topic too, and it was for the CS. Try a search for challenge wheels. I know that question has come up a lot. I'm certain you have to go through the dealer for Challenge parts.
There is a member in Singapore that did this:
http://www.ferrariforum.net/forum/viewtopic.php?t=3649
Actually it looks like you posted in this topic too, and it was for the CS. Try a search for challenge wheels. I know that question has come up a lot. I'm certain you have to go through the dealer for Challenge parts.