[200sxman]

Just remembered, I believe the 91-94 GA had an intake manifold that said ESSC or something like that cast right into the top of it. If it doesn't have that, and I doubt many people swap for that mani, then it would not be a B13 GA swap. But as said before there should be a way to check against a stamp in the block. I have no idea where it is.

I don't know is the GA would have it in the same place, but my SR20 has an ID number stamped right by the header on the driver's side of the block. I think somebody further up already mentioned it, I'm just collaborating it I remember it clearly because i just installed a new header 5 days ago and I saw the number. It said SR20DE number