need help with motor identifacation
 

i have what i belive is a s5/re or rew hybrid motor that looks to set up for na and need help finding out what it is exactly so its. it does not have the holes in the housing for the turbo lines but it also has the exhaust port baffles removed , the center iron does not have the bottom mounting points like normal 13bs and has what looks to be new mounting points machined on the pass side of the block, on the back iron there is no mounting points....

Have any pictures that are zoomed out more? A view of the intake ports, the top of the engine & the spark plug side would help.

looks like a 13b out of like a 89 rx7