I decided to finish a 1/4 scale project I began over a year ago and it was a sig 1/4 scale spacewalker 2..I want to install a motr that will move it around somewhat agressively.I was going to install my os 1.20 but I also have a satio 1.50 not being used currently and thought that might be even better.would be interested in anyone who has use a 120 or a 150 four stroke in this plane. I am going to use a fabric covering and the weight of the plane according to sig will be around 12 pounds or slightly less.