Found this at 1977 Mopeds. Looks like a killer whip.

Description (from 1977 Mopeds):
This is a 1978 Puch built, Sears branded, RIGID custom moped with Puch Swinger gas tank. This bike has been 100% rebuilt to amazing standards by the 1977 Custom Team… it’s modified to fit a Tomos A35 engine, and 16inch Tomos mag wheels.

This custom is fully powder coated and has basically all new components. This ped is super fast!! The engine setup includes: rebuilt A35 transmission, heavily ported 50cc cylinder, custom 19mm intake and a 19mm Dellorto PHBG carb, and a Tomos Technigas Next exhaust with powder coated black silencer.

Also coming new on this bike: Shinko SR714 tires, primo grips and bmx pedals, all new cables, new tubes, and much more.