header and cat

What up guys? I was just wondering how much it would help and if it would be a good idea to put a header and a new cat on?
The muffler isn’t that special, (a magnaflow), so would I gain anything?
Thanks homeslices

hahaha nice name dude, mabey i should change mine to Thomas Shitt??? lol, anyways, ya a header and a new cat will help.
i would get a header, high flow cat, and a 2.25" cat back on a NA application. you have a magnaflow muffler, but do you have bigger cat back piping?