Unless you are an electronics wiz and have some money, leave it alone. On the 4th gen clusters (as I'm sure on the 5th gen clusters as well......) you have to carefully look at what options you have (e.g.: XREAS that come with Limiteds) and match them up to your truck. I'm sure basic functions will work, but other information might not. As someone mentioned, the pins might be completely different even if the harnesses plug right in.
NOT that it would be very interesting to see if someone tried it.......... by all means go for it.