grill remove

trying to remove the top grill on my gen2 and the 2 screws hat holf the rubber hood stoppers are seized and the heads are stripped out ......think i might have to drill or backwards tap and see if they can break loose ....
tried attacking from underside but the nuts they screw into are welded to the metal
little shot of PB blaster on the screw heads to let sit overnight ....started getting thunderstormed on .....lack of a garage sucks ....
anyway ....if anyone has a tip or trick that might help i would welcome the advise otherwise tomorrow I will try the reverse tap...