I have come across a rattling noise that after a few days of attempting to identify it myself and mechanic opinions + verification.
I've concluded that it's my catalytic converter, I have found a few myself but I'm debating whether to buy just the cat-converter, but I would like to know if I have to buy the entire exhaust system if I'll be buying a different brand. Will it matter if I do?
Is Magnaflow a good brand?
I'm new here and this seems like it won't be too hard to replace, since I'll be replacing it myself, going by the book

 

What? Car?
Kinda hard to answer this seeing as how you're missing the most critical information.

 

98 accord lx 4dr 4cyl