fuel

Recently got an integra and oh boy problem after problem. Problem first, backstory later. Fuel filter is leaking from fuel feed line bolt. Is there anywhere I can get a replacement for that bolt or can I try and reform the threads to make sure it fits? got the car two weeks ago at 165k miles...

I have a 1999 Acura and sometimes it runs a little rough. I was told that a gas treatment would help. But when I went to buy one there were so many. What treatment would be best for my car. It's a automatic. Thanks