Stereo & Electronics - Questions on installation...(sailpanels)

Okay, well my bazooka's arrived today, and i'm starting to remove the plastic and all to get to the mount in the sailpanel... i'm reading a guide i got off of this site and it says to make a hole for ventilation? Where exactly is the hole supposed to be made? Also alot of people were talking about a spacer, and i'm not exactly sure where it is supposed to go and/or i actually need it... I'm running in a ws6 2001 trans am i purchased 6.5" Bazooka's from Kee Audio..

I know this is vague but need some noob help here..


Heres the guide i'm using:
http://ls1tech.com/forums/showthread.php?p=9488460

Already answered in a PM but since it's posted I'll answer here as well!
The Bazookas do not need the hole drilled behind them (that is for the Elemental Design sub) and the spacer is dependant on the vehicle. Thanks to GM's close tolerances (LOL!!!!!) on F-bodies some need them and some don't. The most that is needed in some vehicles is a 1/4" spacer but most have installed them without needing them.

Whats the part number on the SVC bazookas for a Camaro?