I just purchased a 2005 g35 6 speed w/o navigation but I know I drive alot of places and I need navigation. I dont want to do a double din because it will get stolen I want to install the oem navigation I need to kno what is needed to do this........

I know you need the screen the dvd drive the controls but does it matter what year screen and drive i get it from would i have to do mods to the wires are buy new harness???

You need to spend more than a DDin will cost you.
You will have an outdated, crappy navigation system.

Or you could spend $100 and buy a portable navigation system that is in every way better.

You need:
05 Headunit + Nav screen combo
05 Nav unit (dvd drive piece)
05 Nav Wiring harness
GPS antenna
About 12 man hours

Stock navigation sucks worse than a $100 garmin, either go with a slick in-dash unit and risk it getting stolen, or do the garmin.

If you search, you'll find somebody full installation experience doing the stock retrofit to get an idea of what you'd be getting in to.

I did the whole double din navigation system twice on my legend coupe stolen twice this is why i want a oem look plus the screeen hides thats why they make it so people wont steal it

on my non nav coupe, I had a small tomtom in my cubby/nav area.

I like tvs plus i could watch movies on long trips but do i have to change my head unit that i have now the stock oem cd player would that make a difference

Just modify the old stock faceplate to fit over your double din and put it in place whenever you park.

Ok now im lost you mean after i install the double din nav wit the jdm faceplate what should i cover it with

does anyone know if a the dash on a 2005 4 dr is different than a dash on a 05 coupe is the navigation system different too

^ No
The only differences is between years (2003-2004) and (2005 and up)

so if i get 2004 nav system it will not work in a 2005 setup but i can buy a 2005 4dr dash and nav system it will work perfectly fine in a 2005 coupe

Yeah, but frankly, you're wasting your time and money doing so.

Why is that???
How come your not so fond of the oem nav????
I mean you have to know nothing about g35s to not be able to tell that some1 has the nav system because you can see the nav controls, so it still has a chance of people stealing it but is the problems with it why no 1 likes them

Please use these, it lets people understand what you're saying.

Vowels are good too.

Srry using my phone so txt language comes out