The 2.0 N/A engine is a very rare engine within Seat. For tuning options you might be better looking for the 2.0 GTI MK4 Golf that was out around the same time
Think its around 115bhp your as std. But with it being N/A you wont get huge gains from a remap, i'd say (only guessing tbh) with a remap, induction kit, zorst your looking around 130/140bhp?
I have increased performance on my TDi from 130bhp to near 190bhp and noticed very little difference top end. But as mentioned, who cares about top end that much as its not worth doing them speeds on public highways anyway. All I know is my 0-70mph has greatly improved
What colour is the 2.0 btw? Piccies!!