Cold Case Radiators now offers these water temperature sensor units for those wanting to connect two radiator hoses, while getting the most accurate water temperature. These are recommended when using a radiator that isn't specifically setup for an LS car. You can use the 1/4 inch NPT bung for your steam port. With this adapter, you can use your regular radiator, connect this adapter with 2 upper hoses and run your steam port.

Details:
38mm Hose Adapter. 1.50 Inch hose on both ends.