What a cracking read!
This has given me much inspiration for my future 350Z purchase. You've done the correct modifications without detracting for the original car at all!
Something I have always tried to do with my previous cars, and including my current Impreza. With the plan to take the my Z on the occasional track day it's nice to see they take to the task well, as I've personally never come across one on track which is a shame.
IMO midnight blue is the perfect colour for these cars. I can't wait to make a start on a new project!