I haven't seen anyone else do this so I thought I'd share my install.
They don't make double din kits for the Nubira so I had to make my own brackets and trim ring. I recessed the head unit slightly in order to make a security cover as well.
I also installed a set of 6.5" component speakers in the front doors, tweeters behind the OEM tweeter locations, I had to make plates to mount the 6.5" woofer in the door but was but difficult. Installed a 6.5" coaxial set in the rear deck. Powering the speakers I installed a Class AB 4 channel amp under the driver seat. The sound quality is EXCELLENT. I may add a small subwoofer soon although I lean more towards SQ over loudness.