Spica Injector thread size

[JJK1204@domain.elided]

Hi,

Does anyone know what the thread size of the Spica injectors. I am referring 
to the thread of the injector in the intake manifold. On the same subject, if 
the thread size is an oddball, does anyone know where I can purchase plugs, 
as I would hate to sacrifice a set of injectors.

John Katos

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