So I'm putting this in members BMWs because it has a BMW drivetrain now.  With a third kid on the way the Volvo wagon isn't big enough so my wife found a 2004 Sienna on craigslist with a bad transmission.  Got it home for 2200$ which was probably too much in hindsight.  It's an XLE Limited with AWD 172k miles.  The previous owner had a power flush done on the transmission and it plugged the filter and killed itself shortly afterward.  I was planning to get a scrapyard transmission but apparently