You will need a new cable, cable bracket, accordian boot (some people have stretched the old one over, but it's REAL tight), TPS sensor plug, the TB (duh) and the gasket. If you have traction control you might need to get rid of that too...Earlier cars had a "mechanical" system that has an 8 foot long cable and motor assembly that you ditch in favor of the new stuff.
I'd call Bill Jenkins to get the exact info. He sells alot of these kits and knows exactly what you are going to need. I had mine installed in about 1 1/2 hours... Good luck!