I was reading on some page about there stage 5 kit wich was a 2.0L. what is that out of?

I'm no expert but no "kit" in the bolt-on sense is going to increase your displacement. You would need new pistons, rods, and likely crank, and have your engine block bored out by a qualified machine shop. It's a lot of money to gain 0.2 liters IMHO but if you're determined to squeeze more performance out of your 1.8T then go for it. But you could probably make a good down payment on a Ducati motorcycle by the time you were finished...

But most people wont find that out till they have spent way too much money. Plus add on doing a much larger turbo since most of the kits out there use too small of a turbo and that larger turbo will need custom tuning which will cost you the arm and leg you have left after spending the first arm and leg to pay for the 2 liter build up. Well thats unless you have your mommy and daddy pay for it.

because i have 6 fingers on my right hand...
J/K

BTW why did the European Car write up on your car say that the software just "GIAC X chip"? That's a mistake, right? You've got custom GIAC tuning or something?

what about using a 1.9 tdi block with the 1.8 head is it the same bolt pattern? NE1 work at a parts store that can compare the two for me? i want the larger displacment for a larger turbo.

this will give you a 1.9 liter.

I plan on running 30lbs of bust on race gas and 20 or so on pump. I want to have the thicker walls.

I have 8:1 CR and 83.5mm bore.