I called up Chevy to see if they even made an instrument panel with a tach, and the guy can't really help me unless I have my complete VIN and the part number of the old IP. Well, I don't have the part number of a IP that has a tach in the dash, but the guy did bring up a point... The wiring harness for the new IP would probably be different from the existing wiring harness. I may just have to go with either a pedastal mounted tach or go with a complete new custom IP...800 bucks worth of autometer sport-comp gauges... *drool*
Always check your new best friend....
If you need replacement gauges, LMC Truck has them except for that tach.