57 Exhaust Header Part Number?

[KULTULZ]

Later heavy truck and HP FE/FT engines used steal shim gaskets (and this may be true of MD/HD FYB) and these also served the purpose of heat shielding for spark plug boots, etc.

I came across an engine build photo of the steel shim gaskets (B8T 9448-A) (1958/ 292 MD and HD) being used. You can see how they protect the plug boots from heat-

EDIT- (Today 12/14/2017 @ 12:09 PM - Correction)

OK...

Let me try this again as I am constantly learning...

The photo shown is not using 58/ steel shim exhaust manifold gaskets (B8T 9448-A) but Spark Plug Heat Shields (B5A 12299-A).

B5A 12299-A Shield is available from Dennis Carpenter if cannot be found NOS.

Photos Below- 1st and 2nd photo showing individual shields and 3rd photo exhaust manifold gasket with integral shields.

2nd EDIT-

Relating to choke stoves. Photos Added.