I searched all over to find correct material for the trunk insulation when doing my '56 NY Convert. It doesn't exist. The only place to get authentic material is from a donor parts car with a good untouched piece and literally chop saw the underside crossmembers that hold it in and remove it in one piece. The piece will have the imprint of the cross panels where it the sections can be cut and then glued back into your trunk. Been there, done that!! John