can someone give me a good site for leds and also is there a link or can some one tell me the bulb sizes in a 2010 g37 sedan headlights thanks

 

Search and google is your real friend here

 

Check out either V-LED or Diode Dynamics for LEDs...they are both Vendors here on the forum.

Link to replacement bulbs:
Lamp Replacement Guide View All Bulbs

Not to lecture you, but doing a search for these answers are considered to be your first step in G37 Modding 101.
Please complete assignment and memorize!