you'll need to install the mk4 mounts for one.
If you dont want to run the computer and all that,you need to research M-TDI the "M"is for mechanical.Im not sure,but if your to use the 02a tranny you will need the pedal and hydo clutch assembly.
Start herehttp://www.vwdiesel.net/phpBB/viewtopic.php?t=6427