The Hot Wheels Opel GT 3-in-1 kit features lots of customizing options, one 4-cyl. & two 6-cyl. Engine setups, 3 exhaust systems, 3 hoods styles, chrome rims, metal axles, pad-print vinyl tires, and real metal injector stacks. Build stock, drag, or custom version. The kit also includes Hot Wheels decals and sticker options.