'87 wiring question

[EE80Liftback]

I think there's a very good chance that you can find this in some other car. My carbed E8 had a relay box with space for an EFI relay as well, even though there obviously wasn't one. It's indicated by the red arrow on the picture:



If it's the same one there's in your car then I'd say get one from a "normal" E8 :-)

If not, try looking up the part in the EPC (link can be found elsewhere on this site). After that you can ask the EPC in which cars the part with that part code was used and it should give you a list.