Yes, My car was ordered without stripes. It's marked on the build sheet as: (Stripes to be deleted). It also has the special paint code (-) on the trim tag.
This is true for late 68 & 9.
67 would have been 0-0 & early 68 would have been Z-Zhttp://camaros.org/numbers.shtml#CowlTag
Scroll down till you get to - Cowl Tag Examples for Special Paint
Do you have a pic of tag? I have a 67RSSS that is said to be a factory bb delete.
Looking into a little more verification.
Just post a pic of your trim tag and we will be able to help you.