the 2.0 in the Golf is 115hp and about the same in torque. The strong point of that engine is that it is robust and reliable. It's not the same as the ABA, which is a very popular engine to turbo in Mk3's and to swap into Mk1 and Mk2's.
The Neuspeed kit is actually very good, but it's not going to get you the power that a chipped 1.8T can give you, or a VR6 with bolt-ons. The only complaint I hear with anything Neuspeed is that they are expensive.
My suggestion is if you have the mod bug, throw money into the suspension and a 2.25" cat-back. Techtonics Tuning has a few cam and chip combos available for that car that don't require you to change valve springs, but I don't know if you want to start taking things apart.
Check out
www.vwvortex.com for tons of info.
Good Luck