It’s a lot easier and safer to just replace the sump plate, guys.
Think about it: would you want a repair to fail on the road, dropping your oil plug?
By the time you realize it, the engine is toast.
Snag a used one from here or eBay if new cost is too high for you:
https://www.ebay.com/itm/Oil-Pan-Fits-97-04-06-PORSCHE-BOXSTER-341420/333009416776?
.