Shameless Plug:
Here is the Lancia Delta I did last night, painted to look like the rally car of the early 90s. It also is tuned to 550 PI for C class racing online. I just created and tuned it last night, and I already have gotten a couple top 100 lap times with it, without much practice.
The reason its a shameless plug is I currently have a copy of it up on the auction house :-) No other tuned C class deltas on there, only stockers. The copy contains all the same tune settings I use, plus the paintjob.