Reversing!
The one mod I've done to my Crossfire is fit reversing aids. You have to admit, its not the easiest car to reverse and rear visibility on a frosty or wet day is very poor.
I had reversing aids fitted from new. Dealers won't do it but I found a chap who only fits reversing aids to cars. If you give him the chassis number, he gets them sprayed the same colour of the car too so they blend in, as much as these things ever do. The total bill, fitted and colured to match the car, was less than £200. Worth paying I reckon.
I'll post some pictures.