This is the best place to put it. I didnt have to pull the carpet way back like that though, it just tucks in nicely. There was enough space to tuck the radio and the wires in. Super easy install. I had to use the firewall grommet from the driver side because the passenger side grommet is hard...
Dont buy from this company. They charged me a 3.5% "processing" fee on a pre-order that needed to be cancelled. I wont be doing business with them ever again and I'm telling everyone I can about their horrible customer service.
Internal storage room in the hybrid models...like...for a first aid kit and a jumper battery. From videos and pictures it looks like there isnt any room for these in the top models behind or under the back seats due to the battery and the JBL bass speaker.