If you'll monitor ePay daily,you'll eventually come up with one.I see NOS ones come up 3-5 times per year.They go fast, and they go high,so if you want it bad enough,you don't whine, just open your wallet.I believe the entire range of years will interchange, but there are differences in the color of the face.I bought an NOS one, it sat on my shelf for about 5 years till the original finally bit the dust.I swapped them out, had the original re-built,and now IT sits waiting on the shelf, where it will probably remain till needed again - when I'm about 75 years old - it lasted over 50 years on the first go-around.
Could you use one that has miles on it already? I have seen clusters on Ebay go for anything from $25 to $250. Often incomplete clusters that have the speedometer but are missing other gauges, the glass, etc. go for the least. I am a bottom fisher, and sometimes pick one up that no one has bid on to get a particular part I am after.
How soon do you need one? I might have one in the barn, but due to my schedule I may not get out there till the end of the month.