(Wiring to the engine bay) Front parking sensor wires and 4 gauge wires for the amp

Mazda 5
I have a RHD Mazda 5, some say the steering shaft has a access point to the lower engine bay. Is there another hole behind the glove box, where can easily get through the firewall?
2013 Mazda 5 Sport
I am not sure how, if at all, sheetmetal for the firewall differs between LHD and RHD markets, but I think the area behind the glovebox is where the harness from the engine enters the interior.