Mac M/C 91. Stock ports. I don't see any rouges in cylinder. Has the tapered crank. Turns over smoothly with pretty good compression. All fins are intact and look good. Inner shroud has a Crack on the side as shown in photos. A couple chunks out of Inner shroud as well. Looks like a nice rebuild able motor. Pull starter works as it should.  If you need more pictures just let me know. See photos.. Ask any questions. Lower 48 states only.