This is a '73 Dodge Challenger Customizing Kit from the General Mills Fun Group. The kit includes parts and instructions to build either a Gasser Drag Car, a Street Machine, or Stock version. It's a 1/25 scale model kit.  Unassembled open box kit with some parts on sprue, some loose parts, instructions.  Decal sheet has some decals on it, some loose and stuck to the interior of box, and some are stuck to others on the decal sheet.  Box shows some signs of storage, some warping/crushing, missing proof of purchase.  Fairly square and solid.