Where do i route wires for radio thru firewall ?

need help.....cant find any grommeted holes thru the firewall to run a radio lead wire....coax out thru where?/ any suggestions....am i missing something i do not see any ....also any help on mounting a 1/4 wave ant to top would be nice grounding?? thanks guys !!!!

 

As far as running stuff through the firewall, there is a huge rubber grommet in the drivers side engine bay that you can poke a small hole in or run it through the edge of the grommet. You can see this grommet from the engine bay or behind the pedals. Hope this helps

 

I've ran two 8 gauge wires through the hole for the hood release wire. It's above the grommet for the wire harness on the drivers side. It was a tight fit, but a stiff wire and some wire lube got the job done.