only a few things changed between those years, but I'm not sure it will work. The HVAC blend door control system is one thing that may cause issues, I am fairly certain a 97 had the old cable driven style and the 2000 probably has the electronic servo version so the 97 won't have the wiring or connectors needed for it to work.
Also I'm pretty sure if the 2000 didn't have sentry key in the first place, it will ignore it as long as you don't plug the sentry module from the 99 harness in? I'm not too clear on how that all worked.