I've Just bought a new Rear Light Cluster (

 

There are some useful exploded parts diagrams on this website - just enter the year etc once S2000 selected. May give you a start at least.

Headlight & Bumper are both sub assemblies that are given

http://www.hondaautomotiveparts.com/auto/j...PartsSearch.jsp

Others may have better installation links/instructions. Best tip is to always cover screwdriver heads with a piece of masking tape, or at least the areas around anything you are "levering"!