I am restoring a red 68 GT Fastback that does not currently have the C-Stripe from the last repaint.  I plan to strip the paint and repaint it red (the original color).  I have the Marti report which states it had a black C -stripe which I plan to reinstall (it's also on the body buck tag). After looking in parts suppliers catalogs I notice there is a reflective and non reflective stripe.  How do I know which one is correct for my car???

Thanks,
Gene  

I have been restoring these for several years and never have seen a relective c stripe as original equipment. They were all non-reflective from the factory until 69' when the Mach 1 came out.  

Thank you.  I have not either  

The reflective C stripe came with the Reflective Group that included reflective paint on the GT wheels in 1968.