$775 for a used engine. About $2,000 for a low mileage Japan engine, the supercharged variant.
I have seen low mileage Japanese diesel engines for the Previa for sale before too, but they are rare.
I would be inclined to swap for either the supercharged variant or the diesel if I ever got a good oportunity to do so. I'm not sure of what all I would need, but at least with this van I'd already have the manual tranmsmission, which is rare and never was offered with the supercharged engine.
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