sending unit

looking for a used cluster for a 1990 k5 blazer. I mainly need the voltage, oil pressure and coolant temp gauges. with their respective sending units if possible. I've been unable to locate a used cluster so far. and have also been unsuccessful searching online. if anyone has a lead or knows...

Got a stock 88 K5 tbi 350, fuel gauge quit working and I failed inspection for evap leak within the same week. Decided to install new sending unit, went with a Delphi assembly. Installed, thoroughly cleaned ground, ran new vent line to evap (nothing to do with guage) and gauge is still stuck at...