There is only one theoretical slot in GT-Ferrari 458 Italia. However, I make no promises that this car will still remain by Saturday. However, there *IS* one slot in the Nissan R92CP in DP, for certain.
I'll give you your choices:
[*]Sign up for the 458, and come to tomorrow's test race, to see if anyone takes it, to test for Team Ferrari with Team Leader Daibaspeed.
[*]Sign up for both, and see which slot you can join
[*]Sign up in DP for the Nissan R92CP and be in the Rolex series (come tomorrow and we'll show you the ropes)
If you don't have the Nissan R92CP, then there are no DP slots left for you, unless you're able to find one. I personally don't have an R92CP, and can't help.
If you want in with either car, check the Rolex thread, and post that you'd like to come to the test race tomorrow. If worse comes to worst, you'll be signed up as a reserve, until a spot becomes available.
Finally, if you want in with the Ferrari, we're testing throughout the week, and a good, strong show from you will help guarantee your position. Consider this your "testing session," somewhat like Formula 2 is to Formula 1. This week, all of the races will help you build a rapport with the teams and drivers, and a spot might open up for you.
Either way:
[*]Go post on the Rolex thread
[*]Tell us (Rolex competitors) your predicament
[*]Tell us which car you'd like to take
[*]Come to all of the un-official testing races throughout the week
[*]Have fun, be polite, avoid crashes, and finish well, and a spot will open up quite quickly.
Good luck!