If you don't get a new UIM, you'll need the gasket for that. If you stick with the current upper, I'd suggest getting a hold of Bill Buttermore to see if he still has any shielded reduced diameter stove pipes. That will go a long ways toward protecting the upper.
Get the Dorman "Help" coolant elbows, some high temp RTV which will work better on sealing the end gasket corners, brake cleaner for cleaning things up, and throttle body cleaner to clean up the throttle body and IAC passages. Oh, and some thread seal for the LIM bolts.
Black 2000 SSEi, Silverstar Headlights, Angel Eyes fogs, 3rd brake light overlay, hi-flo cat, drilled 180 degree thermostat, Intense FWI, PCM, shift kit, and 3.4 Pulley. Solid front mount.