the kit is a old one that i got from one of the guys i fly with he built it strong the covering is not the greatest due to the age of the airplane I just want to fly to see if it holds together then I will recover it I flew it once with a st 75 it flew nice but had a lot of weight in the nose to balance it I figured with a gas engine i wouldnt have to add that much weight to it wrong still had to add a lot of weight about 16oz