Here's one of tangalora's incredible posts on the procedure, along with a complete parts list:
zer...age=1
You might consider posting in the Infiniti Parts forum. I know of at least one poster who ordered a kit and never put it in:
zeroforum/172
There's really no aftermarket source for these parts, so you're best getting them at a discount through Joe at 1-888-216-5328. Ask for him - he knows what's needed. And if you haven't already, read everything on this site about Chain Guides:
http://www.q45.org/techhelp.html