How does it ride?
The one I built was scary and it had front brakes.
After the third near miss and first crash I dismantled it, I never felt comfortable on it anyway.
Steering is too sensitive/quick, wheels too small for any sized bumps, frame is too small for an adult.
They get a lot of looks though. Ok for some short low speed rides or as a conversation piece.
If you want ride it at any speed get some decent brakes on it, a red hot coaster will either lock up or fail completely leaving you where I was last year, with a cheap caliper on a chrome rim and a red hot hub.