Well this thread quickly turned in to an argument, why post if not too help?
You may think I'm doing the same, but no...
I own all the Ferraris, and have the achievement so :p
I'm willing to loan out a couple at a time for people if they want the achievement, just make sure you only need a few cars, I'm not going to gift you all 14, but 2 or 3 is fine.
Also, I can't gift the 250TR or the 250GTO because I bought those with tokens so the game wont let me.
And finally, to those wondering how I afforded all this, I just played the game. There's an achievement for getting a manufacturer to affinity level 50, so why not choose Ferrari? I realised this early on and since you're buying them all you get plenty of variety for season mode.
Simple. :)