Need a suggestion for gasoline engine

[Warron]

Hi Warron Gray here. I building a 1/4 scale version of my experimental airplane I built. Heart attack losing pilots license.
So I'll fly an rc version of it. It will have 8 foot wingspan, single, gasoline model engine preferred weight of ship between 25-30 lbs.
Six channels uses a spitfire airfoil. Low wing as enclosed photo of full sized
It was relatively a fast airplane using air-cooled corvair modified real engine.
Any suggestions or questions I'd appreciate an response. Thank you Warron

[Bahman]

I would suggest a DLE 50 or DLE 60 twin. You could also look at Desert Aircraft engines in the same sort of size but there is a fair price difference