Maybe. Not 100% sure I remember that well on what Lauren Egineering made. I was under the impression they made a complete fiberglass H/O style wing with the spacers "built in" and formed with the rest of the legs. Gave it the "looks like it's a separate piece but isn't" look.Just a guess but maybe a Lauren Engineering wing?
Keep in mind, too, that there were other wings out there that were sort of generic wings that resembled the H/O wings of the day.
This fact is for sure. There were NO factory-supplied rear deck wings on any production 1980s Cutlass. I'm being technical here on purpose as there were always engineering group who put all kinds of junk on the cars for testing. The H/O wing still does not count because it didn't leave the factory with those, but indeed, were added at the C&C (Hurst) Tier 1 supplier facility down the road. Jury's still out on the LV2 and Cutlass GT spoiler versions as I don't think they were done at Tier 1 supplier facilities. I'm not sure it was a GM-wide contract that controlled those.
Although, I wouldn't contradict anyone who stated that the 83/84 H/O came from the factory with the wing. Hurst and whatever vendors they used to fabricate and make the Hurst-specific parts and supplied those to GMSPO. So yeah, that's how you could buy Hurst specific parts through GM and IIRC, all the parts were warranted through the GM warranty and parts stashed in GM warehouses. 84 W40 could probably pipe in and discuss the G-body H/O warranties further and with better authority, but I didn't see anywhere in the 83/84 H/O literature or GM literature that C&C was not required to provide any parts and/or service support by themselves.
I say this, because when Chevy did it with the Camaro SS/Firebird Firehawk program in the 90s, the 3year/36,000 mile warranty was covered by GM for GM stuff, and if it was an SLP-supplied part issue installed at their facility, SLP would partner with the local GM dealers to warranty the part separately from GM.