Well got a little more done this weekend.
Found some batteries that were the cranking power I needed and the size that would fit the area.
Brute Force AGM...same exact battery that is made by Oddessy except it only has a 2 year warranty instead of 3 and is priced accordingly.
First I made some cleats out of 3/4 marine ply and used six-ten to epoxy in.
Next I used up some more of my left over wood and came up with a neat fitting tray. It will be held down by s/s tee nuts and painted to match the bilge.
Now the battery's. The tight fit picture is a little deceiving, both battery's fit on the tray and do not hang over ...need to get some nylon strapping to hold them down.