What will you need to turbocharge a 1997 mitsubishi eclipse gsx??

I'd get the entire kit, with the engine being 10+yrs old, you will need to replace everything, turbo, pipes, intercooler etc... You also need to remember about tuning which has to be done at a shop and will run ya 500-1000 dollars too. If you just get the tubro you will prolly run into problems with the existing turbo parts.