[Christ]

The part identifier numbers are always in the same places, regardless of what engine in a series you're looking at.

If it's a JDM engine, there is no number after the letter, so D15B will show just that on the block tag.

You can visually check for a D15B crank b/c it has 1.5 main journals and 1.6 sized rod journals. The D15B is Vtec, so check for the presence of a Vtec solenoid.

I'm pretty sure that NO JDM engine came with DPFI on it, so if it's in there, it's hacked together.

Are you looking at a CRX DX with DPFI and a D15B in it? Cuz I know someone that has one, and is selling it. They bought a D15B as a replacement engine, and put it in using the OEM configuration, just to get the car running.