I Came across these on Ebay and they were Mint condition dubs from a FX including OEM TPMS. It was a steal for $1000 Total $150 to ship
Here is a Picture of My Brothers Black M35x and mine on the Right with the FX Dubs.
I have no problems as far as rim fitting, tire noise, ride is like stock.. hence the stock wheels!
Also, depicts a very classy ride with low profile tires and keeps it lookin better than ghetto wheels!
A good Idea for a Black Infiniti would be the 20" Infiniti QX Wheels. someones gotta do it up!
http://www.flickr.com/photos/61187398@N06/5596057391/