gauges

I have a 1997 s10 with a 2.2 5 speed as yall may know they didnt come with tachs i recently bought a 1997 blazer with the 4.3 i got the gauge cluster out of it can i make that tach work for the 4cyl and also when i v8 swap can i use it there

I bought this gauge cluster and I started doing research and I can't find it being referenced anywhere. It looks the exact same as any other gauge cluster with a tach but its got the 7k redline...

so I recently changed the intake manifold gasket and I changed the oil from the milky coffee to fresh oil but my oil pressure gauge doesn't move when I start the truck. It wont move at all. Could this be a gauge issue or an oil pump issue? The truck doesn't over heat anymore and seems to idle...

I have a 95 sonoma highrider and just replaced the heater core so I had the dash out and when I reinstalled the instrument panel is not working properly only gauge that moves is temp and not accurate all other gauges dead. Did have to jump start it with a old charger then once started noticed...