Window Crank Questions

[69-er]

I have a few questions concerning the front window cranks on a 68 Firebird with a black custom interior.  I did a search and the responses were all over the place, so I'm hoping another try will help.  I'm hoping the Camaro and Firebird were the same in this area.

1.  Are the cranks different (more arch) on the custom door panels compared to the standard panels?  I was hoping someone could provide pics of cranks that are known to be original/correct of the two interiors.
2.  What color should the knobs be?
3.  I've seen window crank springs in catalogs.  Do they go over or under the panels?  What's their purpose?

It seems like this would make a good research topic. 

Thanks everyone!

Larry

[Everett#2390]

1. No, same handle
2. Knobs should be the interior color, but service counter replacements were clear, and black, I think, until supply ran out.
3. Springs go between the panel and the door to keep the panel against the handle and with the plastiic shim behind the handle, keep out the drafts.