my 1.6 already has the k14 turbo, and this is from the factory!

its a SB code engine from an A2 GTD which I gather you guys didn't get over there (I'm in the UK) the GTD was suposed to be the 'performance' model of the diesels being intercooled from the factory too, and producing about 80hp and 114lbft
if VW saw fit to use the k14 on their 'performance' model then I guess it may well be worth doing

EDIT: I forgot to say - I can't actually tell you if its any good as I havn't had it running yet, as I'm in the middle of fitting it to my rabbit and its not quite finished, also having not driven any other turbo diesels I don't really have anything to compare it too.