I purchased a 89 CRX HF with the intent of putting a K24 motor in it. I'm selling the JDM B16a that came with the car. A few people have shown interest in the motor and asked very good questions like is it a SIR-II, B16A2, B16A3 or something else. I don't know and I live pretty far from the shop. My friend that knows the owner of the shop lives and hour away and can't get down there too often. But Sunday he went down and took some pics. I showed them to the shops around me but they didn't have a clue.
Please take a look at these pics.
Block number: B16A 1036474)
number on the head: it's either P3CA64251 or B3CA64251)