ALL 1971 A51 DUSTER TWISTER OWNERS, need help with stripe decoding!!!

Another discovery as of late is I've discovered that the original twister stickers didn't have a white outline (well, not th ones I seen anyway) There where some TX9 triple black cars produced with black stripes and (there was a 70 340 Duster on eBay so equipped). I think it would have the black twister stickers still if it were a stripe delete car. I'll have to look again, those may be listed on the build sheet but I think the fender tag code for them may be the L1X9.