Yeh I saw the pics- (can I have the engine ??) Yes the onboard glow is a Mcdaniel single cylander. I have set to come on and off at the flip of a switch, Also works great to keep low idle by leaving it on. It is good for almost 2 solid hours of continous use. I purchased it at horizan hobby for around 60 bucks. They work well. The led comes on to indicate the plug is hot and goes off when it is out, the hole unit including the 5000 Mah NiMh battery weighs 3.7 ounces. It is all in a rather tiny unit also. But in the Gee Bee there is enough room to put furniture inside LOL. The switch unit is a ELEKTROTEC super rocker, the LED blinks continuoisly to let you know your system is on. You can purchase the switch with or with out this option, including the alluminium plate and barrel charge receptacle it is aroun 35 bucks, but I figure hey the switch that controls the heartbeat of your aircraft better be good (check out MADISON COMPONETS). I love that twin Saito in the mono coupe. Is that the stock carb ? or did you have it made. I know the OS twins only have a single barrel carb. Here is a G4 simm pic of a gee bee I fly. Steve