you need:
* z6 head
*z6 headgasket if you want lower compression/y8 hg if you want high compression
*z6 intake manifold with throttle body and all sensors, and gaskets for both if you remove them at all.
*z6 cam gear and timing belt
*ex or si engine harness or ryewire conversion harness
*p28 ecu (dont try to use a vtec controller)
* always run 91 octane or higher when you get gas, lower octane rating will be more prone to knock or detonation.
* get it tuned, with chrome or neptune, or if you can afford it, hondata. it needs the tune to run smooth and efficiently, you'll have more power and torq after the tune. this is the most important step in the whole build. without a good tune, itll never run right. good luck