I've noticed two different types of quarter panel arm rest ash tray chrome inserts, one with the tab in the center and one with the tab at the end. Attached, are photos of reproduction ones from NPD's online catalog for perspective. The NPD catalog says the one with the tab in the center is for 1967 Camaros and the one with the tab at the end is for 1968-69 Camaros. However, the Camaro Master Parts Catalogue No. 691A (November 1968, revised July 1969) lists three different rear quarter arm rest ash tray assemblies under Group 12.045 as follows:
1967: 7653741
1968: 7740365
1969: 8761461
I have two show-chromed restored 68 original ribbed ash tray lids but do not have the two original chrome inserts. I'm looking for a pair of original inserts to get re-chromed and want to get the correct ones. I test-fitted both reproduction types with the different tab locations in my original lids and both types fit. Which insert type is factory correct?