Verify that the car has these said turbos and it may just need a tune depending if the car is not running efficient. Drive it and check to see if it bogs, stalls or has a rough powerband. The buy does not have a 'safe' sound to it because I know not too much about turbos but I am assuming that anytime that you swap, it would be recommended to tune afterwards.
Any questions about the Balt, all answered here:
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