What DOHC Vtec Engines fit my 1996 Honda Civic cx?

i want to get a DOHC vtec engin for my 1996 honda civic cx but everywhere i go they tell me that there are only sohc vtecs that go in them but i've seen DOHCvtec on my type of honda civic. I need help finding the perfect engine for my car. Please and THANK YOU

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