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Now, does anyone know if the 73 to 80 cluster is the same as the 81 to 87? I know the dashes are different, but I'm pretty sure the guage clusters are the same. Anyone know for sure?
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No, they are not all the same. I think there is abount 3 to 5 different versions. They will all work with minor modifications. I have only, ever, seen three truck/tach guage clusters. I purchased all three and they were all different. Fonts, circuit board, mech oil vs. electric oil, volts vs. amps...
There was also different fonts used. AFAIK, there was no tachs made for 82 to 91. However, an 81 will have the same font ( I have one /forums/images/graemlins/smile.gif ) but the others will have the older look to them.
BTW - If you lose out on this one, I have one out of a 1979 that I will be selling soon...