Mint rebuilt instrument cluster with tach. ??

[joey8383]

Call me stupid.... But I'm building a street truck and have always imagined it with digital gauges or a non tach cluster with a big tach and shift light hanging out. This is not for sale, but if I actually decided to sell it and go digital, what's it worth? It's a restored very nice piece.
Will these factory tachs get damaged or hurt at all by spinning the motor up to 6400-6600 RPM and burying the 5000 rpm tach?
Again, it's not for sale. If I decide to sell it, I have a local friend who will want first chance at it. Thanks guys