Headers for LS1?

[skoffice]

Hey guys I'm putting an LQ9 in my 64 and am almost to the point where I can fire it up. I'm stuck at the point of headers now.. I cant exactly afford the Doug Thorley's. I have heard that the 98-02 F body headers will fit with modification. I'm looking for a bit more detail on specifically what brand of headers and what modification needs to be done, otherwise I'm probably going to just build a set even though I don't really have that kind of time right now. Any information would be greatly appreciated!