That's a great looking '02 Formula. Enjoy!
There are a few pair of the Firebird-specific (Grand Prix was similar but different) cast-aluminum exhaust tips on eBay right now. Conditions vary. Maybe these will help.
https://www.ebay.com/itm/115411344935
https://www.ebay.com/itm/115806218101
https://www.ebay.com/itm/255088283495
https://www.ebay.com/itm/265263767965