I'm about to to take my MMW headers apart and replacing it with my stock ones. Any suggestions or links to anywhere that can help me if i run into some problems. I'm asking now so i can get some help incase after I go with the process and get stuck i won't be able to get help right away thanks you guys.

 

you ask a lot of questions... but you don't seem to use the button which is very useful.


Try using this:
https://www.scionlife.com/tech/

Here's how to install an aftermarket header.... should be the same process to putting the stock one back on:
https://www.scionlife.com/tech/?article=134