Well allow me to rephrase my prior statement. In terms of modifications to the motor you don't really need to add anything.

Here's a decent list of pre-install things to take care of:

• Make sure ALL maintenance is current (hoses, belts, timing belt, water pump, brake pads, tires, etc.)
• If not new or nearly new, then new fuel filter (regardless of #1)
• oil change and new filter will happen with turbo install,
  start using premium gas now
• Compression and leak-down tests have already been done, right?
• as "lean" a coolant mix as you can stand (flush coolant system, see #1)
• Redline water wetter and a good water pump lube/anti-corrosive
• new thermostat
• new radiator cap
• new 1 heat range colder NGK plugs
• new NGK plug wires
• spray penetrating oil on nuts and bolts that will need to be removed