RE: Composite ARF Lightning with AMT Olympus HP?
You are right about that it doesn't need an Olympus. But it will handle a Oly if you don't use all the thrust for speed. I have a Merlin 160 in mine, and I think it's all it needs. The two main tanks holds 6 liters, and that is plenty for the Oly.
The friend I am refering to with the Oly. powered Lightning is a rep. himself.