Yes, the curve is the same, but, where it ties into the side trim is different. The Barracuda has a rocker molding, the Signet has lower side trim that's in a different spot. It would leave gaps and you'd have to cut a slot if you used these on a Valiant Signet. The other '66 models didn't come with wheel opening moldings. They should be stainless too, not chromed steel.