I was just given a very nice sears motor, the issue im having is i am trying to get the specs on this motor, the info I have is model 1703c and serial 15131. I found that this model is a eska 3.5 hp motor made in 1971, Here lies the problem the front of my motor says sears 3 hp on it. so now im confused on what i have here. any help would be great.