All you need is 10 nuts and bolts and gaskets if you want to replace them. I believe you can buy a sheet of gasket material from any autoparts store or here:
Amazon.com: Mr. Gasket 5960 Ultra Seal Exhaust Gasket: Automotive
You should be able to cut more gaskets than you need from a single sheet. You could reuse your existing ones but they might not seal as well.