Wow. OK, before we go too far with this, and judging from the questions you're asking, are you absolutely, positively sure you want to do this on your own?

Excuse my asking, but you really want this to be done right, and there are parts of the operation that are definitely not for novice coachworks amateurs.

If you're sure, my advice would be to AOL/IM or email siracer@aol.com. He has the best looking JDM-nose ITR I have ever seen, and he can discuss it with you and point you to the online guide that has been published.