What is the "correct" original style rectangle dome light lens used in 1970???:confused:

I have seen two different styles being sold. The GM one has the raised ribs in a "rectangle recess" (incorrect service replacement part???). The repro has the ribs protruding from the face of the lens. Which is correct???

I don't have my original to refer to.:wacko:

http://www.ss396.com/mm5/merchant.mvc?Screen=PROD&Store_Code=chevellecamino&Product_Code=IBB-0138

This looks identical to mine which is the original :confused:

Anybody have a photo they could post of a known original!!!:D