Is it possible?

Here is the deal:
I had a 94 Z28 that I built up the engine and put alot of work into it, well... I wrecked it but was able to buy it back from the insurance company so I got to keep the engine and trans and then some.

With the extra money I bought a 97 SS and put a 98+ instrument cluster in it, now I want to put my engine in it which is OBDI and I have everything I need, engine, PCM, Wiring if needed, etc. But I am not sure if I switch to OBDI if the digital odometer or even the instrument cluster will work.

Has anyone done this and if so what extra measures were needed to make everything work??

Thanks
John