[Jeff Lee]

Pat is the tech person @ NHRA.

I tend to look at it this way. If a car like an SS/AMX or Hemi Dart / Barracuda has a scoop attached to the hood it is part of the body. Obviously that body is part of an engine / body package (in these cases you had to buy a 390 X-Ram or X-Ram Hemi engines). But the end result is a open hood sccop on these type of cars was a body part. If you needed a new one in 1969 you ordered the part from the body section of the parts book.
Now if you have something like a '69-'70 Mustang or '70-'71 Barracuda / Challenger shaker hood assembly, that ram-air part is affixed to the engine and is part of that engine (offered in these examples on many engines).
I see the difficulty in the allowance of a GT class but that is what NHRA implemented.
My friend has a '69 AMX with a 290. I say he should be allowed to cross from SS to SS/GT and use a factory (steel) SS scoop. Presented as a body part, I can't see how NHRA can say no.
It get's really interesting when you look at all the trick body / interior parts of a '68 Hemi A-body!