I found several pictures of the power pack on 96B. It is not very clear, but we can recognize the eight cylinders. I will try to find better ones.
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According to the interview for the deputy chief commander of power system of 96B, the power of single cylinder on this engine is same like 99A. Due to 99A has a 1500HP twelve cylinder engines. So power of the eight cylinder engine = 1500 * 8 / 12 = 1000 HP.
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Some media report 96B has a 1200/1300 hp engine. I guess they confused the 96B and VT-4. The Export varaint of 96B is VT-2B.