I did the same conversion and the troble you have is that the later passat and audi engines have more sensor holes etc and the later engines have a different shaped filter housing.
2E engined passat from the UK would be the one you want.
What I ended up doing was using the filter and housing off the adz motor and cutting a chunk out of the engine mount to allow clearance and then making a strong, but funny shaped engine mount incorporating a holder for the clutch cable.
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