I am not so sure if I can be of help.
I worked on the 126 body panel kit before (when I had to replace the clips - mostly plastic). When the clips are replaced, I just snap them back on. Need a little push and it goes into place. Now, this is where I don't know if the strip works the same manner. To be doubly sure, if the strip has hatches where it meets the end of clips, then I'm very sure it snaps back on. Or look for clip marks if there isn't a hatch.
126 tailed by a 203, 129 leading the pack.