IIRC the DOHC D16A1 (USDM 1.6l DOHC MOTOR found in the pre 90 integra) will swap to a SOHC block, but the benefit is almost nothing. YOu are better off doing a SOHC VTEC head, or swapping a SOHC ZC motor in.
The DOHC ZC motor is NOT THE SAME as the PRE 90 INTEGRA MOTORS





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