Our gauge clusters are designed to fit the original openings. Sending Units and Tech Support are provided. 
Each gauge cluster kit includes:
3 Dolphin GPS Gauges:
1 GPS 3 3/8" Speedometer
1 Electric 3 3/8” Tachometer 
1 Electric 3 3/8” Quad featuring 4 Gauges: Oil Pressure Gauge with Sending Units; Water Temp Gauge with Sending Units; Fuel Gauge with Sending Units; Volt Gauge
 
Gauges Feature Convex, Glare Free Lens & Air Core Movements
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Dash Insert Details:
Polished Billet Aluminum Rear Mount (3) Hole Dash Insert
Designed to fit the original opening of 1941-1946 Chevy Truck
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Manufactured in Dolphin Gauges State of the Art Machine Shop 
Package Includes;
Items depicted in Listing
Instruction Manual
Tech Support