Okay, looking over the engine more, two bolt holes for the muffler, venturi on carb is extremely small, case marked made in Canada, has the number 80 cast in the lower case, the number 81 cast just below fins on cylinder, flywheel marked made in USA. I looked at another picture of a Quadra 35 and it had for holes for the muffler, my engine has two. The back of the engine appears the same as a G-38/quadra 35 but the cranks is lower than the g-38. I don't know what I have