74 roadrunner

[hockeydad]

hi i am looking for the piece that goes on trunk between rear bumper and trunk anyone know what it is called and where to get one

 

[idrivemopar]

I believe that is just called the deck panel, if you are referring to the one that has the bumper bolt holes in it and bumper supports welded between it and the floor pan, the one on top of it and to the rear of it should be the deck retainer panel, where the weather stripping attaches. I don't think that is reproduced, so salvage yard may be your best bet if yours is not repairable.