I installed a D3 in an 04 G35 coupe. I would say not to go with metra mainly cuz u lose that stock feel. I installed using the JDM and it looks great. I added the ipod option, steering wheel controls, ps2 hook up, and bluetooth and was able to get all the wires to fit. It takes a second to get used to everything, but that only took me a couple of days. It works great. Sound quality is awesome too, (after messin with the D3's EQ a bit) Here's a couple of pics to show u how it looks.