No hood stripes on '68s. It was a blackout "patch", between and including the side-facing "scoops".
It's pentagon- shaped, with the front matching the contour of the front of the hood.
Most guys get that wrong and paint a rectangle.
Rear edge runs straight across.

www.performancecargraphics.com has the pattern & measurements.
If you Google "68 road runner hood blackout pattern" their site will come up.
GTX & Road Runner used the same blackout.

The '68 fender-mounted turn signals are the "bullet" type, mounted at the peak; fenders should have holes if they're original to the car.