The dash will swap in, but your issue is going to be the wiring. You won't be able to use the gauge cluster or any of the switches on the newer style dash as the wiring harness is entirely different. The only way you could successfully do this would really be if you swapped the entire engine, drivetrain, and wiring harness from the newer model as well.
Trust me, what you're talking about doing is a massive, massive undertaking.