[Luper52]

Just completed this upgrade the other week. Absolutely thrilled with the outcome. When the brass fittings are flush, it looks sweet!

[hi rpm]

I had one stripped hole by the windshield, and this cheap fix worked:

Injected loctite epoxy with oral syringe,
squeegied off excess with card,
let cure >24h,
drilled with 7/64" bit (masked for screw depth),
vaccumed dust,
ratcheted screw in "screwdriver tight".

[Robiovic]

I did mine too but with a little another approach.
I used thread rivets M6. Basically, the procedure is the same, drill hole(corresponding to your threaded rivet) and install the rivet in a conventional way, using less pressing force, because it's a plastic panel. I have used a rivet with a big flange because I was afraid of the rivet not holding torque enough during service, for the same reason I don't use inserts and glue, don't think it's a solution to last.
The only disadvantage of this solution is the flange of the rivet raises a little the whole filter cover and seal on the filter is not touching properly, it's hardly touching. I have added an additional little foamed rubber o-ring rope( I had it on hand ) under the original silicone (white) seal to raise it. You can do the same or throw away the original seal and buy a new one from aliexpress, foam silicon seal 5x5mm and you will be fine.
Each air filter hole consumes about 60cm of the seal, so buy at least 2m.
Here are some photos.

[musa]

Used the same trick for my intercooler bolts - worked great!