Ken & Reffug, it'd be pretty nice (as well as respectful to one of the pioneers) to link up George Scolaro's website detailing his install (
http://george4wd.taskled.com/auxbat.html). It has the Toyota parts numbers right off the top for the tray and battery hold down which would allow folks to call Dan up and get the ball rolling quickly. His "do it yourself" management system works great too. This is what I've got and his washer bottle re-locater with the Corolla bottle allows you to have the dual batteries and a s/c or t/c.
This is an exceptionally crummy photo but it shows the relocated washer bottle that George developed.