correct mono leaf springs for L48

[DaveR]

I took my leaf springs out of my car and one of them is broken.  Is there a way to tell the difference between the different coded mono leaf springs if the tag is gone?  Is this only possible at a spring shop? 
thanks Camaros.org

[Stillwater Camaro]

The only distinction the parts books references to are a coupe or convertible. No different rear springs for different engine combinations.

[JohnKY]

There is a rear spring usage chart in the 67 AIM. UPC 4 - B1

[Jon Mello]

Some Camaro monoleaf rear springs got a daub of paint on the front spring eye, which can determine the application. Do you see any paint color in that area?

-Jon