rotted out extension pipe

[Winterbeater94]

is this what I need to replace the extension pipe after the CAT. http://www.partsamerica.com/product_images/img/mar/578804.jpg
it looks like it but there is so much dam rust I can't tell. And does any one know what kind of Gasket I need?

Thanks

 

[Mud Bug 94]

its a thick fiber ring...made of some fabric.

 

[Mud Bug 94]

BTW yes thats the stuff you need