Joe,
Regarding Advanced Composite Materials; yes, I have purchased from them for
my IV-P.  I bought 40 yds then at $19/ yd.  They know which fabric is used
by Lancair and will give you the spec which I don't remember now.  Hal
Woodruff gave me the turn-on.  He purchased from them also.
See their web site at www.a-c-m.com or call (501) 253-9280.
Good luck,
Walter