The Comp Coupe class allows streamlining ahead of the cowl. First paragraph in section 5.D.1 states that streamining devices included in 4.CC can be used.
The original question included GC, I figure this was a typo. If not, section 5.D.3, page 66, 3rd paragraph states that any streamining devices included in 4.CC cannot be used.
If I may once again refer questions to the new rules clearing house:
rulebookinfo@scta-bni.org
This email address was put in place as a tool to help speed up the response to questions. This is supposed to work for the m/c guys too Bak189. There is oversite to ensure that the mailbox is being used to help you.
If you think a rule needs better wording please submit a change form, available at
www.scta-bni.org.
DW