need serial number...
but the answer is; no and no.
You need the computer and software hook-up.
Most of the older CARB tier1&2 MCFA trucks don't have a dash display speed warning, but a lot of them do have the ability to a control of motor speed based upon transmission sensor input speed.
the 2004 version trucks need an update to the VCM that often requires sending the VCM back to the MCFA factory, in order to enable the "speed control" in the software as it was an option [$].