The following photos show original 1968 Pontiac Firebird hardware and new hardware represented by Inline Tube as exact OEM restoration parts.

In the first photo showing the double clip, the original firebird part should have two retention barbs but one is broken off. The Inline Tube part has no retention barbs to retain it in the frame.

The other photos show the clip mounting holes that are nearly as large as the head size of the original mounting bolt. The hole sizes, shapes and overall size is incorrect.

Another photo shows how bolt thread pitch of the original part compared with the Inline Tube "exact OEM replacement".