New In Box (Display car shown). Bill Jenkins Grumpy’s Toy 1:18 1968 CAMARO Pro Stock IV. Manufactured by Exact Detail for Supercar Collectibles. This 1:18 scale has all the great features that Exact Detail is known for: Lift off Pro Stock hood, 427 Chevy engine with tunnel ram, spark plug wires, race headers, opening doors and deck lid. Race day graphics, with Cragar SS wheels, race slicks, and black bucket seat interior. A great car to add to your collection.