Are you looking to widen the track for handling, or is this just for looks/stance?
If the former, you're better off fitting offset hubs. Scirocco rear hubs (+15mm per side) and Passat fronts (+8mm or something, iirc). Fitting both gives you a square track, F to R. Ideally you want to avoid a wider rear track than the front for understeer reasons, but rocco rears with Pissrat fronts doesn't upset the balance.
Spacers always were and always will be a bodge. All they do is push the wheel further outboard which f'cks the scrub radius because the knuckles remain in the same position....but stance scene points....so who cares, screw the road holding and emergency braking stability.
Wide track hubs actually lengthen the mechanical leverage for improved handling. Spacers do not. All they do is add XXmm offset to the wheel.