Holley metering blocks and emulsion

So it looks like it has the emulsion tubes. I don't think you have to treat it differently than any other 4150 unless it behaves in way that requires investigating the e-holes.
As soon as I ran the numbers for a kit I realized it was a 570 and I told the customer it’s completely wrong for his application. I doubt I’ll get too much further in to it. In fact it may not ever go back on the engine. He did say he has a 318 that needs a 4 barrel so maybe I’ll get to tune it on that.