If this is the SP model, with fully adjustable suspension it will also have an aluminum swingarm. Check it for cracks also. Over torquing the axle nuts can crack it. If it's the CR model it will have a steel swingarm and non-adjustable forks.
The SP is the better model to go for, imo, because of the suspension and full floating cast iron rotors, carbon fiber goodies are a nice extra too. Not that I'm biased or anything.
Check out Chris Kelly's site for good info
http://www.ducatitech.com/