I made a phone call to a friend to ask about that pump hanger, he had mixed reviews.
But he did say if you use one of the more powerful pumps with the bump out at the bottom it needs to be cut to fit it then strapped.
That rules it out for me.
Also worries me that it looks a bit like the D&D hanger that had the fittings break off randomly back in the day.
I'll just pay up for the holley 12-347 and then buy these fittings.
I have an 8 and a 6 and it comes with both. Should be able to pull off enough connectors that are on the car now and not need to buy any more.