Im looking to install a Z28 Cluster in my non-Z28 -- What is required to do this? Since the main differences are the Z28 has 130spedovs LT's 85.

 

The speedo is a direct swap. I swapped out the 85mph speedo in my 80Z28 and everything worked as it should. Because I was a couple hundred kilometers from rolling over to 00000 on the odometer, I put my original odometer in the 'new' speedometer.

I would expect the entire cluster to be a direct swap.

If you have the whole thing out, you might want to look at installing a mechanical oil pressure guage where the (usually broken) clock goes. All you need to do is bend up a small metal bracket to secure the guage to.