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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 they are hard to come by and are around 1000$ or even more for a lower mile unit. So a friend and I pulled the engine and transmission at a shop with a lift, not really any other way to do it as it has to come out the bottom. We got the suspension put back together and put it back on the ground to push outside while I got the transmission fixed and he says to me "hey would one of your BMW engines fit in here?". So we got out a tape measure and figured out it was somewhat possible so let's get started! Oh and my wife said to do whatever is cheaper, which this wouldn't be if I didn't already have an m50 with a g250 transmission sitting in my garage from my '94. The engine has an m54b30 intake cam, bored .020 over and Maxsil coated pistons, UUC lightweight flywheel with an m5 clutch. First problem is all the steering stuff in back like every transverse engine vehicle. Cleared that out by flipping the spindles, and struts left/right. So the calipers will be behind the axle and the tie rod connection is in front. The strut mounting, wheel bearing, and ball joint mount are in a line so it won't affect geometry. Moved all of the steering stuff and sway bar. Then I trailered the engine up to the shop, ready to get started.