When it comes to interiors, at least with the Mercedes SLK, the door panels, dash panels and seats can be swapped out. My interior was originally all grey but I wanted more red to match the outside body. I was able to replace the side airbag covers that are in the door panels as well as the leather covers on the seats for the look that I wanted. The XFire being based on the SLK may do the same.

I even installed some XFire parts in my SLK. Notice the gauge cluster and the AC Heater controls.