LOL I thought it was a 104...
Here's another thought for you. I bought a POS Verucci 50cc about 5 years ago, and I stripped it down to the bone. I call it my Vruk.
Point is you can buy any old scoot, and build a Ruk for about 1/3rd the cost, and anything goes. The seat is left overs from the OEM seat, and plywood for the seat "frame".
The headlights are cheap china ebay (3.00 shipped), and on the side of the seat you'll see a toggle switch, and momentary button for the ignition, and starter.
I bought that bike for 75 bucks (not running), and I have another 120.00 invested. I ride that bike about 1500 miles a year, and have more invested in the paint (Awl-Grip) than I do in the build. It's 4 years old to me.
Started as a 2009 Verucci.