Muffler Needed for '97 Boxster

[boxster333]

Hi All, I have a 97 Boxster and there is a fairly loud rattle in the exhaust/muffler when I Rev the car or accelerate. Its hard to hear it when you in the car, but its pretty noticable when you are outside. I think (but not sure) that it could be a baffle inside the muffler that had boken away. So I believe I have 2 options.
1. get a new one "or" 2. open mine up and get the baffle re-welded?
Any thoughts, ideas? or good spare mufflers ? out there.
Or am I way off and I should be looking at something else?

Thanks