Dave Bennett
Adventurist
:lurk:
http://www.kodiakinc.com/powersystems/dualbatterykits.html
This link worked this afternoon. I called them, we chatted for some time about their products.
They use two Odyssey pc1200 batteries for the later model Tacomas, fitting where the stock battery is. They also have a very similar set up for the FJ Cruiser although the FJ guys have a wider choice of batteries.
Looks like a nice way to go if money isn't particularly an issue. They quoted me $850 complete (and they do mean complete - including an installation special tool or two.)
Of course this does include the two Odyssey batteries.
Ed