Jeff, I built one of the early kits back in the mid nineties. I stil have it but it's semi retired (worn out). I powered mine with SuperTiger .75 turning a 13x6 prop and used the TF exhuast muffler with desent success. I don't recommend the 1.08 but it would be good if you were more experienced and planned on racing. Your Saito .80 will be fine and sound a whole lot better then a two stroke. One tip for you, my AT6 liked to fly a lttle nose heavy. So check and double check your c/g. And don't over control on the elavator. I flew most of the time with the elavator at the low rates recommended. Good luck And have fun!