This is a picture of my '73 chop. It has a P/P girder, AMEN frame, MAC pipes. This bike was put together in my third bedroom in my house during the winter of 1979. Except the motor, all the parts came from the west coast by U.P.S. 
These bikes are fun and easy to work on. I will never part with it. Thanks, this is a great site.   Bob from Jersey