how would you make a cowl out of a 2ltr. coke bottle or sprite and make the cowl to work for a .40 starfire arf? someone at the hobby shop mention 'have you tried to use a 2 ltr. bottle?' and i thought now thats an awesome idea. its just a plane to fly ill get something better like the little tony from great planes. this plane is like a back up. so has anyone tried this before? what should i need to know? thanks