hi, im trying to find a DIY write up on installing an amp and sub

i have the stock bose sound system, and i got the pac unit, amp, and sub, i boughy my amp kit from knu konceptz, the most trouble im having is, where can i get the wire through the firewall?!?!?

 

http://www.crutchfieldadvisor.com/S-...all_steps.html

 

Right up under the steering wheel, stick your head up in there. There is a rubber plug. Pop a whole in it with a knife and your ready to go.