Re: Greetings from Metro Detroit
Welcome to the forum.
There have been several successful builds using a woman's step through frame. It can be done but takes a little more work and ingenuity than simply bolting an engine into a 'V' frame. Other options are a rack mounted engine(over the rear wheel) using either chain or friction drive.
Good luck and keep us informed about project.
Age and Treachery Will Always Triumph
Over Youth and Skill & "Charlie Don't Ride"