Thanks for the suggestions--they truly are appreciated!
I ordered KKM and will get a heat shield.
I bought copper plugs and I'll try to fix the throttle hang problem as soon as I get a chance. (What size hole?)
Then I'll put in the Superchip, and we'll see what happens.
Later in the summer I'll do something with the exhaust. I'm going to need to take it to a muffler shop. I probably can't afford a cat-back system just yet, so I'll get a Y-pipe and replace the resonator (with glasspacks?) Actually, does the resonator make much of a difference? Should I just leave it?
Dan: Mine's a green '99 too! (#2434)
Thanks all!