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All motor...I would go with the LS, b/c it is just so deturned from the factory. 600-650 flywheel is probably all you will get from the Coyote and maintain drivability. After that you would have to spin it too the moon.
Boost...they are probably equal. But if you include the Boss engine the 5.0 wins for factory b/c of the forged internals.
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