Did you try the search function before starting a new thread?
I found 4 or 5 tunes for this car.
One of them here:
https://www.gtplanet.net/forum/showthread.php?p=5554960#post5554960
raVer
Thanks! But I forgot to say that it's not fully tuned, just 490 HP.
Should still work fine, only thing I'd recommend when using a tune for a higher power version of the same car is to possibly turn up the LSD accel a bit (go in 5s or so, see what it does) and possibly some gearing changes.
If you can only apply items from GT Auto, then RM it.