i want to put a key less entry systm in my 97 f 150 scab and i found an oem one on ebay but it is for a 2003 Ford F350 will it still work?

 

Don't have the answer to that. Your gonna need the lock actuators , the control box, fob's and whatever else goes with it.
Like I've said before, I would just install the generic lock actuators myself (about 30 bucks, parts) then get a remote start with the keyless option with it, (about 120 170 bucks).installed.
bullseye670...........................