You will need to get a bracket fabricated and welded, either onto the backside of the 02J to marry up to the existing mk3 mount or, welded onto the mk3 chasis arm like it is on the mk4's to marry up to the 02J.
I personally would sell the 02J and source an 02A from a mk3 16v, you will need the flywheel and clutch from the 16v too.
You are going to need the cable shifter from a mk3 16v or from the AGU car, and you will need either the hydro set up from a mk3 16v, or the Seat Hydro to cable mechanism (I have the part numbers for these if needed)
What year is your car, if its an early model you would be best getting the Seat stuff as there wont be provisions on your pedalbox for the 16v hydro set up and changing the pedalbox is an absolute pita!!
Hope this lot helps
Good luck
