RE: need plans
.76 class combat? Who are you flying against with that kind of power?
You'd do better with smaller engines, like Alex said, the damage to the planes goes up quite a bit as the engine power goes up.
I'm also not sure I understand what you're asking when you said "what happened" above. Do you mean that picture? I think it was taking right after a mid-air between those two planes, though I'm not sure. I used that picture because it was the first I found that showed the plane from a good angle where you could see the shape of the wing and fuse and so on.