[Pampered-Z]

Few other options:

Friend had his battery mounted under the bumper/quarter panel, behind the rear wheel well and the cutoff mounted off that. This seemed fine for a track car, not sure I'd want that an a street car?

For the on/off switch. I plan to mount mine behind the liscence plate. This way no one can mess with it, and at the track all I'll need to do is remove the plate.

Make sure the box you get is NHRA certified, so of the cheaper plastic ones are not, mostly because they aren't vented. BMR makes a nice battery mount specificly for 4th gens that bolts into the area where the spare tire is. The switch must be labeled so the saftey crew can quickly shutoff the car ( PUSH OFF or labeled ON and OFF for the turn style), Also remember that the battery box must be grounded or you'll fail tech! You have to wire the on/off switch into the harness so that the switch shuts the car off and not the power to the ECM you can't just have it disconnect the batt becuase the car will run off the alternator and you don't want the ECM to have to relearn.