The parts book doesn't list these, but my 1973 shell had a need for one for the passenger side metal brake pipe where it goes down to the bracket in the inner wing where it meets the rubber flexi hose to the front calliper. There wasn't a hole for the drivers side pipe. I got these from a motor factors in the 90's. I believe the inner end which clips to the pipe is compressed into the remaining leg which is placed into the hole in the inner wing. When compressed the tube end expands so the clip is retained into the panel. Not easy to do when the engine bay is filled as vision is obscured by the battery tray. When I put my one into the Troll the engine bay was clear. Sadly I cannot remember what I did to install it other than clout it with a plastic mallet. I have a vague recollection my '72 bodyshell needed one too, but there wasn't one in the '69 Deluxe. Interested to see what other member have in their cars.