Goingh to get a battery for the rear bins..
 

99 miata battery oughta work ok right?

This is what you do:

1) Pick up a ruler.
2) Measure the battery.
3) Write down dimensions on a piece of paper.
4) Measure space in rear bin.
5) See if dimensions of rear bin are larger than dimensions of battery.

That is all the time it should take to do this.

I dont mind hacking up the bin some.
I have a sweet dremel ;)
But thanks for reminding me to measure. I wasnt going to.

Make your cables out of welding cable and run the pos through the rocker panelto the fender well for a safe clean job.

Make sure you get a sealed battery. If you need to use a traditional battery, get a sealed battery box that has a vent tube to the outside. You can find battery boxes from Summit Racing or Jegs, though not sure if they have a size you need.

I bought an Optima dry cell.
I have pics. i'll stick them up if anyone cares??

Bakerprecision makes a real nice small sealed battery. I'm using the PB19, its only around $100 shipped.