Of special note. There are actually three versions of the GM trunk weather strip. The early versions do have the string. During the mid 1970's, the same version of this strip was used without the string until the mid or late 1990's. I should also mention that the early versions of this WS gave you enough material to do two Camaro trunks in the box.
As of late, GM is still issuing this weather strip under the OEM part number but the rubber is much harder.......like the Soft Seal and in many cases, it's very hard to close your deck lid.
I tell all Camaro people to seek out the first two versions of the WS as they are the same soft latex rubber and will let your trunk close with ease. Last thing judges want to see in a nice car is the small cheap SS weather strip in the trunk gutter. Does not even look correct when it's installed.