Intake perfect fit without gaskets.

Spadman said

Yes, that is a good option of course. I’m just wondering if there’s someone out there who did it and it failed. Mechanic friends tell me OEM’s have used Silicone only but I have always used a gasket even if cut out myself. That said I pretty much always use some kind of dressing, including g a thin spread of black rtv.

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I’ve said this so many times I want to puke.

Machine the intake face. If you machine the intake face of the head because you think the next intake will fit it you’d be wrong.

The guys telling you that bullshit are not engine builders.

You can buy 4 intake manifolds and measure ALL OF THEM and it’s more likely than not that aren’t all the same.

There are production tolerances.

Machine the intake manifold face the thickness of the gasket on each side and send it.

If your shop can machine a cylinder head they can do the intake.

If they tell you they can’t do it go find another shop.