87-89 DME control unit
 

I have a Porsche 911 DME control unit and an o2 sensor. Both are new and OEM.

the DME will fit any 911 from 87-89.
I ALSO have a DME control unit that will fit your 911 Club Sport M637 and raise your RPM limit by 600.

the o2 sensor will fit any porsche 911 from 87-89.

the DME control unit is 1600 obo and the club sport DME is 1800 obo
thanks