frame mounted battery box

[coguzzi]

maybe i should ask int he homebuild section:

does anyone know if the ford battery box listed here as a '10 e350 battery box:

http://cgi.ebay.com/ebaymotors/320625347192

is the same as what i need to add a 3rd battery to act as my house battery in a 97 e350 psd (diesels already have 2 batteries to start the motor). seller does not have a part number

i guess im wondering if it will bolt up to a 97, and make everything "EASY"