Need help figuring out part needed

Hello,
Sooo my catalytic converter got stolen and I'm getting around to replacing it..
Problem is that the parts pdf I have doesn't mention what bolts I need to mount it..
I found the bolt and spring kit for the part that mounts to the exhaust manifold... but cant figure out the back bolts.. I'm also curious since I noticed the mounting flange to the muffler is severely rusted if I'll likely need to replace that as well. Thanks for any help or advice!

 

Pics plz

 

That rear flange is part of the muffler/pipe.
I’d go to an exhaust shop and have them weld a new one on.
The part numbers show for the bolts and nuts are the actual part number.

You can go to …. parts.Toyota.com …. and double check.
I pulled these for a 2006 2.7 4x4 since I don’t know what truck you had.
But I believe the parts are the same.