Power wire on 03 Sedan

[srv2nv]

Anyone run one before? I haven't had that great of a look yet as to where to run it but I figured I'd ask on here for advice from anyone who has already done it. It will be a 4 gauge power wire if it matters. Is there a hole somewhere that I can run it through or am I going to have to drill a hole? If so, where would be the best place to drill so I don't hit anything important.

Also, how did you run your ground wire? Is there a hole I can just put a nut/screw into in the trunk bottom or am I going to have to get a self tapping screw to do the job?

Any info would be much appreciated as the head unit install already looks to be 100x more complicated than any other car I've done.