1987 Pontiac 6000 LE, subwoofer

I need help with getting the power cabel through my firewall to power my new subs. problem is i cant find a hole to put it through. my only option seems to be going through the fender. has anyone else done this/know an easy way into the engine compartment? any help would be much appreciated.

P.S i don't own a drill capable of metal. in fact, i don't own a drill.