Plastic intirror sail painels on 73?

[The Ghoul]

Hey guys,
I seem to remember seeing plastic sail painnels in the intirror of a 73ish chager SE (with segmented grills over the rear 1/4 windows). Was I misstaken about this? I want to find a set (if i can) and graft fiberglass speeker enclosures onto em to clear up the rear window deck for other items. I figgured if they wernt made I could easily take my cardboard ones and make fiberglass ones off of them.. but saving the time would be much easier.

[The Ghoul]

  buler? buler? any one?
figgued id get some type of responce here even as dull as 'why would you want to do that when you could put the speakers...'

[Nacho-RT74]

as far I know 73/74 SEs panels are all cardboard and fabric kind while Hardtops and coupes are plastic... that's what I know. never have known about plastic to SEs