A New gauge ? NO really cant find history

[69gmcshorty]

So I have been searching and reading and asking, and I'm sure the first responder will show five links but thats what i need.

Question: I am re-doing my gauge cluster and I like the simplicity of the 3 gauge cluster BUT i want the tach in the center gauge instead of the turns and what not. I like the factory looking gauges and I am wondering if anyone has done it, built it, bought it, seen it???

Thanks for any of the help. and soon I will have pics for my 49-52 gas tank install on the swb!