They are great engines. Right on par with the Picco P3 .28s. They're geared more towards Truggy and monster trucks, but would work great in a buggy too. A nice high power .21 would work well for you too though I'm not much of a buggy guy. A lot of the good .21s aren't pullstart though, so if you don't have a bump box to start the engine, an engine with a pullstart or rotostart will be what you'd want. Only caveat to the Novarossi engines is most of them require turbo type glow plugs. On retail level, turbo plugs are more expensive than standard plugs, but if you get them from Nova direct, they're about the same price.