This is what I got from dave navone. I have a 03 coupe with a non bose setup.

Hello Bruce,
Not only will your OEM deck sound great, it will out-perform 95% of the
aftermarket decks. I attached an article on the subject...
I'd choose the Navone Engineering, Inc. N-774V which is on sale for
$34.95.... plus $5.00 S/H...
Thanks.
Dave
David Navone


2003 G35 Coupe 6mt Diamond Graphite
AIM= bkchang79

 

I ordered the N-774 and he sent a message saying he would ship the NE-774 because it had some updates for the same price. Got it at home, just waiting to finalize my speaker decisions.

2004 Diamond Graphite Infiniti G35 Sedan
Z Intake Tube
5% Tint
ZAINO