I also have the Yellowbird (infact I have all the RUF's). I have the Calsonic Skyline GT-R Race Car, don't know if thats your kind of thing...
I'm quite into race cars, but the problem is that I'm soon to win the Calsonic in one of the championships, sorry!
Do you need a race car to compete in the Historic Cup? I have my 2D but have no use for it now that I've completed that event