My mom loves her little "soobie", but the car (2002 impreza RS Wagon) is so smooth at highway speed she has trouble keeping the speed limit.

Is it possible to install a OEM cruise control on this model if it originally does not have it?

yes you can. You will need the CC assembly in the engine bay. The car is wired for cruise control already so you just plug it in.

I'm not sure if you need to get the cruise control stalk for the steering column....I forgot.

I've read threads on this before, people have done it and posted it before.

speaking of which I have the cruise control assembly taken out of my wrx. pm if you are interested.