Why not tune it yourself? Look around the tuning forum of the GT5 forums here and learn how to tune your cars, then you will never need to ask for a tune again and can tune all your cars just the way you like them.
I have one, as its one of my main drift cars. I dont really setup cars I just have a general rule of a bit of camber on the back, front suspension harder than the back and dampers all set to 3. And 199mph top speed.
Its probably just my style but if you get a chance, put about 3.0 camber on the back and 1.0 on the front and you'll see how different it is. It breaks traction and goes into a slide much more easily. 👍
Cheers think I'm going to have a mess around with it and see what works for me. Ohh yeh and my bad for spelling maserati wrong it's my predictive text :s