For battery Shane mentioned the Group 51 Battery.
So I did a google search and found this
http://www.sounddomain.com/sku/OPTSC51DA
it's a yellow top like my other one that I loved. (lasted 4 months with out an alternator. and a total of 2 years)
Should hopefully take care of my space issue. plus it can be mounted in any positions (might have to lay it down if I figure out a mount for it)
-Brian
ps: does anyone know off the top of there head if Napa warranty's there alternators and if so how long?