Our club president gave us a bunch of scat cats. I need an engine we don't plan on serious raceing just some friendly chaseing each other around. I have a os 40LA what will this engine do for me? If I have to buy an engine what are some good options? I was looking at a towerhobbies .46 or the thunder tiger .46 pro. I like the thunder tiger because of the front needel valve but know nothing on thunder tiger engines.