The only person to install a gas engine is Mr Haney here on RCU and he installed the zenoah g20. he liked to results the zenoah is a little heavy . the fuji 24, the evolution 26, a brellei 26 , bcma 26, all these is good choices. don't know what a homelite conversion weighs i guess if you can keep it under 40 oz you are safe .most people are installing the os120 or saito 125 on this size plane. I was hopeing that other folks would install a gas motor on this plane when I started this thread but most folks think its too heavy. I have given up on a gas motor and am going glo.