i moved my battery to the trunk and put it and my boost retard where the battery used to be ,all the wires are close to there but watch how close you get it to your abs check point it will mess with it and make your abs light come on !
I have mine right where the cold air intake enters the fenderwell, just behind that tube towards the firewall. It's still far away enough from the headers to stay away from heat. It's mounted lengthwise vertically. It's immediately behind the MAF and I have the BBK CAI.
I am coming to the fact that I need a metal machine shop to (me) to fabricate a piece of diamond plate behind the intake, along the firewall. This is still in progress so it is not set in stone yet, still waiting for my chunk of Diamond plate to arrive. Damn boxes don't fit anywhere do they? I have a Mallory coil to stash too!