Freebie head is gone, unless you mean the 1.6 GTI head? If so it wont fit your engine

On your flywheel is a 19degree BTDC mark which may not offer enough advance for the GTI cam. The Haynes manula shows you how to make your own 6degree line by measuring from the TDC punch mark. You'll need to remove the green bung from the top of the gearbox, then you'll see this:

The small round punch mark is the TDC mark used to set the static timing, and the red mark is the BTDC ignition timing mark.