Hi Doc;
Search out any photos of my "Dusty" profile stunt/scale model. I have all the R/C equipment mounted in a narrow box that attaches to the side of the airplane. A wire push rod operates the throttle. When I want to fly stunt, the carb and box comes off, and a venturi/NVA goes on and proceed as usual. I used all Spektrum equipment, micro 6 channel receiver, nano servo and a small 7.4volt lipo battery. No on board switch, I use an arming plug to turn it on and off. Everything including the box weighs just 1.25 ounces. Works pretty well. If there are no photos on the list I'll take some and email them to you.
Type at you later,
Dan McEntee