Anybody use one of these water pumps?

The pump on the right of your photo does look an Edelbrock water pump.
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(they do not come with the stainless fittings. I bought those seperately)

You may find casting interference when installing.
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Yes your correct about the interference, had to die grind that hose stop away otherwise it hits one of the timming cover bolts that i also halved the head of (arp 12p).