Does the PCM control the MPH readout?

Hey sierrap,
I still may swap out to the DOHC head, when I put in the new DOHC PCM, will my MPH gauge show the DOHC (130) gauges speed, or the SOHC (110) gauges speed?

Cause I'll keep these glow gauges if it shows the DOHC speed

does the PCM control the speedo gauge? yes. will the SOHC cluster work with a DOHC pcm? i don't know.

I've got the DOHC cluster too,
so if in doubt, I'll swap it out :)