Hello Mike, I dont have any info for you but, like you said--it sounds like you can't beat NOS.
We have NOS surrounds too, we don't have the cushions. we are in your area,(Fairless Hills/Levittown) If you decide to get rid of those cushions, I'd be interested.
I spoke with a restoration guy up there by you that has a 69, think the business was called Bent Metal Restorations. think it was in landsdale
Drop me a PM if you want to compare notes
Good Luck Bill V
69 Firebird Convertible (wifes car since 1979) Goldenrod Yellow, 350, plain Jane Car was stored in garage since 1990
I need help, if anyone see's I'm going down the wrong road--Straighten me out!