I know in my last car there were pre drilled holes with bolts in them under the glove box into the engine compartment. I didnt feel like taking out the carpeting to see if my 99 g20 has them. If you guys know if there are any, either side please let me know. If not please post where you drilled your holes for amp power cables. Thanks.

Yeah theres a pre-drilled hole of sorts on the P10's near the steering column.

Someone posted a thread about this a while ago..

http://www.automotiveforums.com/vbulletin/t5064.html

You will find it in there, its pretty easy.

That one is for the p10 if im correct, and i could not find it on the p11. Maybe im missing it, if someone could confirm that there is one on the p11 I would be very greatfull. thanks.