I have the secret audio from
www.custom-autosound.com.
I put the radio under the front seat, the wire antenna under the lip across the rear. I made speaker boxes and velcro'd them up high behind the seats. You can mount the small control panel anywhere you want, but I just put some velcro under it and set it right between the stick and p brake, and when it is parked I peel it up and put back under the seat.
I can't hear it about 4000 rpms, but cruising between 70 & 80 I can.
They have a radio frequency remote also that you can control everything with if you want to install the control piece in the glove box.
Good luck.
I tuck the speakers down low behind the seat if I leave the car in a lot or cruise nights.
Dana