Im doing my first exhaust tip replacement ever.

i have a 2007 Honda Civic LX 4-Door Sedan 1.8L Engine.

I am going to buy me some spring loaded bolts to attach the muffler.. however, i have no idea what gasket or flange i need.


This is the muffler i just purchased online from Autozone: (it doesnt come with any bolts, gaskets or flanges)
HD21008 Ansa Muffler

When i go to autozone, i get a ton of different flanges and gaskets.
Which Flange do i get?

Can anyone help me know which flange i should purchase? Im not sure if i should just take my muffler in person to an auto parts store to see which one would fit.
any help would be grateful. Thanks