I have recently bought a redcat racing tornado bb and after a month i got bored of the engine that came with it (vertex vx-18) and i would like to know which brand name engines would be a direct fit onto my r.c. Also i am really interested in this engine but not sure it fits,it is the same size(.18)and has the same carburetor type(rotary),the engine is called:O.S. .18CV-RX w/11J Rotary Carb .The description of the engine sais ''Good for all ready-to-run 1/10 scale cars & trucks that require a pull-start power plant. Especially suited for off-road trucks'', but does not say anything about 1/10 scale buggies.