Here is a picture of a SLK 230 steering wheel (and Air Bag) that I just put on my Crossfire.
Long story short, I had no Steering wheel at all after the USPS lost my original wheel on return transit from Germany, where I had sent it to get recovered and reconfigured (much like a Startech wheel) about a year and a half ago.

I bought an SLK 230 wheel and Air Bag from Craigslist shortly after that and early this spring I sent it to Dallas Custom Steering Wheel to be recovered and re-padded as shown.
It has real padding with a round profile (for your hands) is much nicer to drive with than either the standard Crossfire wheel (which is hard to the touch and has an odd diamond profile) or the dried up leather, thin rimmed stock SLK wheel. Enjoy