Today I started to convert the 458 Italia from FM3 but I'm not satisfied of the model so I taken the model of FM4 and is more better but the model must be mapped totally and I haven't time for this.
If someone is interested can contatct me to this email:
Naturally I'll give the credits for who have mapped the model
I hope in a reply :D
Here the difference of the models:
Forza Motorsport 3 model
Forza Motorsport 4 model
Thanks for the attention