If you have the factory upgraded monsoon system like my 01 jetta did, have fun. VW makes it very hard to do anything to that system. If you have swapped out the head unit and the amplifier your best bet is to go ahead and replace the speakers, which will probably involve drilling out some rivets, and replacing the speakers with some 6.5 inch rounds. Use self tapping screws and you might need spacers.
If you would rather not go through all this trouble and you are happy with the stock speakers, just cut the wires a few inches before the clips, swap them around until they sound right, and then connect them with butt connectors. Thats the easiest way to go.
