I've got a engine from a 01 Beetle it has a dual mass flywheel. I'm installing into a 00 Jetta, don't know what flywheel it has, but want to use solid flywheel. Easy swap?
You will need the G60 flywheel. I don't know what size clutch the A4 has but you will probably need a VR6 clutch to match up with the G60 flywheel.
The G60 FW and VR6 FW are 228mm. The VR6 PP and disc are a direct swap into a 4cyl. 02A/02J trans. using a G60 FW.

As far as the swap goes, yes. Other than the special socket for the DM FW. I think its a 10 or 12 tripple square.
Check Ebay for solid flywheel & clutch packages, search tdi flywheel.
ECS Tuning has a couple of G60 FW's. Stock and lightened fairly cheap.
What is the difference between the G60 flywheel and the 1Z-AHU?
The G60 and the AHU transmissions are cable shift. The 1Z, I'm not sure of what type of trans they came with?
The 1Z is the same as the AHU, cable shift.
Ya learn something every day. Thanks.