By gas I assume you mean glow powered. If the fuse is still open then you can make it electric more easily as in creating a battery hatch, etc... Glow engines and the new small gasoline engines run well when properly tuned and maintained. You can still have dead-sticks with electrics ! Glow requires more field equipment than electric however electric has a higher cost initially with the larger batteries. A lot of folks have electric, gasoline, and glow planes while many choose to stick with one type. It really depends what you want.