If you mean the one designed for a .48 it would need to be an extremely strong .40 engine. But for all we know you have an LA which is on the Lame Duck side. I'd hesitate to put any .40 on there to be honest as I think it would be an accident waiting to happen. These are NOT cheap or easy to fly. To under power them on top of that would seal the deal. May as well go to a casino. Sorry. Oh, Houston, go down to the dog track near Galveston then.