WOW That is the same as I had when I was a kid except my tank and covers were crome. and mine was on a Monark deluxe frame. The tank fits down more like a motorcycle on the Monark frame. And mine was a lot cheeper$200.Not mine,but good inspiration...
JACK & HEINTZ TWIN-CYLINDER MOTORBIKE 2:MARMAN/WHIZZER - eBay (item 200532009427 end time Nov-15-10 01:57:37 PST)
The more I see the more I want mine back.