Dayum, I wish it worked out. I think a 6BT in a 4x4 Excursion would be an amazing build. If you pass on the blown 7.3l or 6spd 24V let me know, I'd like to look at 'em.
That actually seems cheap for the Sienna AWD, but I'm still leery of hybrid/electric vehicles. At least the minivan has usable cargo space compared to most hybrids.