I announced this in the Editor's Corner, but this is the basic outline of the contest.
You have to start with any one of the four Retro Hobby Flashback Trike kits:
The Roth Mail Box Chopper
Tiki Trike
Milk Trike
or Taco Trike.
The Trike has to have three wheels: one in front, two in back.
I know there are some who would try to get this past us: two in front, one in back, but that's not allowed. Has to retain original trike layout.
You can change motor, drivetrain, wheels, tires, body, or no body. Whatever you like.
Here is a picture of Rich Robertson's trike in progress:
Rich says you can use the Mail Box Chopper or the Tiki Trike for this style. They are the two with four-cylinder Honda engines.
The Milk Trike and Taco Trike have V-8 engines, and the body is part of the frame/chassis.
The frame in the Mail Box and Tiki Trike can be built without the bodies.