There are basically just two kits: the glue kit and the pre-painted snap kit. There may be some package shuffling as to whether you get the figures, as my snap kit has them but my glue kit does not. Any boxing of the glue kit should have the engine options. The best deal I found was both kits packaged together. They really are nice, the snapper has a very nice finish, just typical curbside chassis, but otherwise quite accurate.