I want to change carbs on my 58 GMC truck.engine is 270 straight six.Carb is a Zenith 1 barrel#11275D.Center to center mounting studs:2&11/16ths.Is there ANY carb that will work on my truck?As long as I get one that fits??Having a hard time finding a carb that will bolt-up.Any way that I can "tune"this wornout carb?Been rebuilt twice in a yrs time.Has a adjustable needle valve;air fuel screw.What are basic settings?
Thankx in advance,Danny
