The Nelson F3D (F.I.R.E. .40) with Nelson pipe and matching Supertigre 11mm carb ought to work great for this application. I had one on the bench last week, it purrs like a kitten and transitions instantly to a 26,000 rpm howl. Use the Q500 head, 15% nitro fuel, and a carbon fiber 7.25 x 7 F3D prop.

Oh, and make sure all the women and children are safely in the car before you start it up.