i noticed no problem with all my stereo equip back there. just make sure that battery is mounted in a box in case it were to burst...

It dosent have to be mounted in a box,unless there isnt a firewall between the trunk and the passenger compartment. Without a firewall,it must be in a NHRA approved sealed externally vented box-like the blue one Moroso sells in Summit and Jegs.

The black marine boxes with the strap arent totally sealed and arent NHRA approved,but for a street car or daily driver Id run one to at least protect from acid damage from stuff you have in the trunk flopping on it or around it,not to mention the battery exploding. For a true sealed vented box,you'll need something similar to the Moroso box.

the summit boxes are fine for us because we have a trunk. If you have a trunk your box doesn't have to be sealed per NHRA

Just read the NHRA rules on this topic. You must have a firewall separating the trunk area from the cabin to avoid using a vented battery box.

Firewall can be made of aluminum or steel (different thickness requirements) and the the battery hold downs must be 3/8" dia min and if it uses J hooks they must be welded closed.

The important thing I got from it was a few inexpensive pieces of metal to make a firewall would allow more flexibility in the battery mounting area (plus look cool if I get a couple sheets of stainless through work)

Don't forget your exterior activated kill switch if you're trying to pass NHRA tech! It must be labeled and must kill the car. Haven't decided how to wire mine yet so the computers and radio don't get their power cut but the car dies instantly. I don't want SAFC settings, fuel trims, or my radio presets disappearing all the time!

-PJ Gross

You could also wire a pig tail fuse from the battery to the side of the kill switch going to the rest of the car.When you kill the switch yould have a path still going through the fuse to keep radio,etc still powered.If you tried to start the car the 5 or 10 amp fuse would blow before the car starts(then you would lose power to your radio,etc

Thanks for the suggestions. I've never actually teched a car with battery in boot, just looked up the rules, so I didn't know if they made you show them the kill switch worked or not. Yeah, I should have been consistent, rules do say all power.
Tomorrow new engine buildup will run (fingers crossed). I will try to get pics and post that I actually have a running GVR4 after 2 years of being down. The kill switch won't be installed for a while, though!

-PJ