[computerworks]

Mike...
...if by "correct orientation", you mean what was 'original', the answer appears to be: "...anyway it fits"

I have seen the hinge at just about every possible orientation on S/Cs and Comp cars.

The most common orientation is "east-west', with the cap either hinging inward or outward...or, like the very earliest 427 pictures, it is shown hinged on a diagonal, with the cap hinge pointing towards the rollbar.