Here's what I have so far...but obviously it won't work because it doesn't cover the nubs (unless of course you decide to shave it off)....I'll try to work on matching it as close to the side markers as possible. I personally wanna get away from the Hamburger style as possible. I'll just make fill up the foot print of the stock Nissan emblem.
EDIT:
I added some fillets to the "Z" logo on the edges...just a very minor touch up.