power door locks / windows

I was wondering if anyone knows if 3000gt's and stealths are already pre-wired in the doors for power locks and windows , even if they were not equiped with any.
I have a base model that i am thinking of retrofitting these options , the parts are cheap in auctions , but I am not sure the wiring is there .
;)

If you want to go cheap buy these items from JC whitney catalog or start checking the junk yards and both give you all the wiring