Scraping definition lists without id?

[JEBI93]

Is there any way i can scrape elements like this: http://i.imgur.com/pRbzL2h.png
The url is: http://www.whitebearautos.com/used/Audi/2008-Audi-A3-ddc841510a0a00de7db60364121a4859.htm
So some of cars don't have VIN or Model code, so if let's say car doesn't have VIN number and has Model code because there's none class id it will print Model code instead of VAT.
 btw I'm using ItemLoader.

[Nicolás Alejandro Ramírez Quiros]

this should work.
stock_number = (//span[text()="Stock Number"]/following::dd)[1]//text()
vin = (//span[text()="VIN"]/following::dd)[1]//text()

[JEBI93]

Thanks, it worked!