I'm sure I've seen a just hardware kit somewhere too.
FCP Euro maybe?
If you get stuck (I nearly said "in a pinch"!) you can substitute an appropriate length class 8.8 high tensile bolt (something like 12M x180 - though measure it!). The best finish you'll find at a bolt shop is zinc plate, which is only a couple of microns thick at best, so won't last long without a liberal coating of antiseize or some such.
The mechanical galvanising of the factory and Meyle bolts takes some beating.
The correct nut for the bolt is a 'cone lock'. They're not always available, so get a nylock at least.
Edit: Yep -
https://www.fcpeuro.com/products/aud...lt-kit-vwgkit1
Blauparts do them too, and others I expect