Mine are plumbed directly into the water pump outlets on the block. I use the Meziere block adapters for mine. My temp sensor is in the radiator. FWIW I use a Meziere radiator mounted pump. Can take other pics if you like. FWIW Wilson sells water manifolds. They are not cheap and you will still need the block adapters. Also I believe AndyF also sells block adapters.

Not easy to see but they are in there
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