It's possible but not easy. You need to fill 2 or 3 of the oil send (or something like that) holes in the 20v head, and wil need to do a lot of custom fabrication. I've been playing with the idea but, the total cost is somewhere in the range of $5000 to pull off. For that, you could just but the entire 20v 2.0T engine from Euro Parts Inc
Well, Aaron is probably the most knowledgable person on here when it comes to Swaps and F/I. He says otherwise.
Sounds like you need custom pistion to clear the middle valve, but other then that everything bolts right up. CR is ideal for F/I, but wont work for N/A. Set of custom pistons should be around 500$, plus the cost of the head and you could do it for well under 2.5k it seems.