http://www.odysseybatteries.com/battery/pc925series.htm
These are nice and fit into the aux space with plenty room to spare.
 
I have 2 of these in my van, one for cranking and the other as "house":
http://www.odysseybatteries.com/battery/pc1200series.htm
 
The problem with the 1200 us that it's taller and does not allow the crank/main battery lid back on.
The aux does allow the lid on but I have "insulated" the posts to guard against shorts because the battery is taller than the aux bat box.
 
Bob Stevens
'87 Syncro Westy
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