Opines or facts please

12many said

I have this Holley version. If your saying it has plastic type inserts at the mount holes then they must have cheaped it down (or maybe they are better) a little as the one I have has aluminum inserts like shown here.But it works (along with other things I’ve done to thwart heat soak) in my oppressive oven of a dog house environment.
As you can see the shield extends front/rear under the Holley bowls. Still holding up almost 4 years later not separating or falling apart. I do use gaskets on both sides because I want to.

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My Holley does have nylon inserts at the mount holes..it is black, does NOT look like yours. Different version or just a different item, I couldn't say. What I'm referring to is a spacer that is part of a heat shield 'kit' from Holley, but is it's own piece.

Yes. The resin spacer will require a gasket on both sides of it. The Holley spacer would NOT require gaskets...it's already a gasket-like material.

Not a factory carb, no electric choke.

The heat shield part of the install isn't part of the question. IT is a separate piece. IT is from Holley. IT is aluminum.

I didn't bother with pics, don't figure they would be useful. If anyone cares, ask and I'll be glad to snap a couple of shots.