I had planned on putting my Saito 1.20 in my yellow Monocoupe... Even inverted it required a low of cowl cutting (almost all the through the bottom) ... Way more then I wanted to destroy on that pretty cowl... It also left the prop hub a good inch plus out in front of the cowl... I went with a Mag .91 4s I had laying around... Much better fit... Couple of threads around here state the .91 will fly it just fine... Here's hopping [8D]