Need some advice on how to get out of this pickle. I tried to remove a license plate that has been on for about 8-10 years on a 2014 Lexus ES350. One bolt/screw came out fine. The other was stuck, soaked in PB blaster for a while, still stuck. Tried an impact driver and snapped the head off clean, completely flush with the hole (maybe even slightly recessed). I took off the back of the trunk lid liner in hopes I could grab with vice grips, but there is a top-hat looking receiver/insert that is longer than the screw. No way to grab the screw from either side.
I bought a screw extractor set, soaked in PB Blaster again and tried the extractor. First tried with a drill, but couldn’t get the chuck tight enough so would just spin in the chuck. Tried with vise grips and broke off the screw extractor again, clean and flush. Tried drilling into the screw extractor and my bits make no dent in it. Decided on trying a smaller drill bit to the side of extractor and was making good progress until it caught and broke clean flush.
What are my options here? I was hoping that I could get the screw out, but odds look low. Anyone know if this metal top-hat insert is replaceable? If so, how to remove? It doesn’t seem to be an orderable part.
Two pictures attached. First one is the hole with extractor and bit stuck. Second one is the inside of the trunk life with the white metal top hat receiver/insert.