NYC Vavi install in Nismo Z
 

Are there any shops in NYC with experience in this install. i dont want to change speakers or anything just change head unit to a nav double din unit.

If you dont mind an hour drive I have a shop near philly off the turnpike and would charge very reasonably. I also get great prices on most brands. PM me if interested.

if im not mistaken you will need new speakers if you replace the head unit. i could be wrong though.