Dont mix gutting the pre-cats with headers. You get NOWHERE near the same results.
Buy the MSDS Headers from MSDS, INC. As mentioned above, they now offer everything seperatly. You can buy uncoated headers, or coated headers, hardware set, mil eliminators(which you will need to bu or make your own otherwise your check engne light will come on) all these things can be bought on their own. I suggest buying the headers coated.