Audio Systems: amp wire thru firewall, radio hack, oldsmobile 88

Question
so i got everything set up for my subs but i can not find one of those little rubber plugs on my firewall to put my amp wire thru. iv looked online alot and cant find anything. i have a 1994 oldsmobile 88 royale ls

Answer
Look down around the steering column. If all else fails, you'll have to drill your own hole and put in a grommet. You can find grommets at hardware stores, auto parts stores and Radio $hack.

Just be sure you know what's on the other side before you drill.