Stinger hood question

[notstock71]

We were installing the stinger hood on dads 67 Chevelle this weekend and I had a few questions. I called Glasstek which is who made it. He told me their mold for the stinger portion was from an original Yenko hood which they graft to whatever you want. I wanted to know if anyone made an insert to put in the forward opening, similar to 67 Vettes. Did the Yenko cars have a insert and if so are they available? The hood still needs to have the stinger painted so no pics have been taken yet. I can get some if needed. Thanks again for any help on this one.
Lewis