The 1st thing that has to be done is the purchase. The best deal I found was at Low Cost Batteries.
http://www.lowcostbatteries.com/product_p/d35y.htm
For $169.00/shipped, you can't beat that price.
They shipped it on Friday and it was here the following Monday. Here's a few pictures of what comes with the purchase. If you notice, the battery comes with 3 sets of brackets. I've included close-ups of the bracket we will be using. It's the one the raises the height of the battery about 1 inch.
I've also attached a close-up of the top of the battery. This pic lists the model# as well as the battery's specs.