The late-model (87-89) 944NA and 944T hubs are basically the same, just the retaining screw (the littel M6 that holds the disk in place while you position the wheel) is in a different spot. Once the wheel is on the disk is firmly sandwiched in place, so it doesn't make much difference.
Else this can be an option: (sorry, about the plug)
http://www.thesamba.com/vw/classifie....php?id=577630
http://www.thesamba.com/vw/classifie....php?id=578538
Worst case scenario I can track down hubs around here, about $C170ish a pair depending on the season.
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