I got mine from GPC, Although it was non OE, it was clearly made in the same mould that the OE ones were!
Inspecting the new part revealed that the VW part, and moulding batch numbers had been ground off, but were in exactly the same place as the OE item
The OE item fitted to my car, was never a perfect fit, as in the way that most other fittings on a Mk2 are not a 100% fit either!
If either spoiler is not located on the clips mounted on the front lower panel properly, then it will look pants!
Thom