Sincraft, You'll be alright. Go ahead and finish shaping it. Most of the bottom of the cowl will probably be cut away. You'll know after you get your engine. It'll be easier to shape now. Do you have a Dremel tool? My guess is that you will need it to hog out the inside of the cowl to get the motor in. Is your motor mount installed yet? If not, that could be your major problem. Let me know. Maybe somebody else reading this has some input.