Need help to identify JDM D15B
 

Trying to figure out what engine is in this project I picked up.

It's stamped JDM D15B, but it's different than the few I've seen.

For one it looks like it has a USDM z6 head or a usdm vtec solenoid installed. Also, the dipstick is on the right hand side not centered like the ones I've seen previously.

https://cimg8.ibsrv.net/gimg/honda-t...bf66519f6d.jpg
https://cimg9.ibsrv.net/gimg/honda-t...5159647401.jpg
https://cimg1.ibsrv.net/gimg/honda-t...1ecff81505.jpg