There are a few different versions of the K14 from the VW diesels. In the USA, you guys guy a K14 on the 1.6 eco diesel. In Canada, we got the K14 on the 1.9 AAZ. It`s slightly larger. In Europe, they got a water cooled K14. I`m not sure how it compares size wise.
The K14 sounds like a good turbo for your application. It will bolt right on. You will need to change the air intake hose and the boost hose from the turbo to intake manifold as they are different diameters.