Crossmember Identification. Help?!?

[spiderwebfx]

Hey guys, I've discovered the crossmember in my S12 isn't for the CA20E that the car originally had. (I got it with no engine)

As such, regardless of what I do, an SR won't bolt into it.

Can anyone help me identify this subframe:
This is it sitting directly underneath an S15 SR20DE with RPS13 engine mounts.


Some measurements:



The crossmember bolts directly into the S12, but does appear to have had the steering rack mounts added to it afterwards. (Has shitty non-factory welds)

Thanks for any and all suggestions.

[sssx]

Looks a like a 910 crossmember

[spiderwebfx]

Can anyone confirm?