Will a tailgate from a 66 cornet wagon fit a 67 belvedere wagon, I know there are tail lights in it I have the alum piece to cover the hole. Thanks!
It will fit, but the 66-67 Coronet wagon tail gate has large holes for the tail lights which extend onto the tailgate on the Dodge model, but not on the Plymouth. You'll need to plan to weld some sheet metal into those holes. If you have the Belvedere II model wagon, I think the tailgate finish panel would completely hide the Dodge tail light openings.
You'll still want to weld some metal into those tail light openings so you'll have something to attach the finish panel to, and to prevent the tail gate from filling with water every time it rains. But with the finish panel hiding it, it won't need to look perfect.