d15b=z6 they are both 1.6 ... the d15b is a 1.6 liter engine . it has a WAY more aggresive cam than the z6 ... the d15b head flows more even tho its the same casting . but set aside they are the same motor ... just one is imported and one was made in america . personally i would buy the d15b over the z6 anyday jus because of the camOriginally Posted by Kasper
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