Model is designed from scratch, based on Tube Doorsteps for Model 1 & 2
Required screws for assembly:
8x M3x10
2x M3x8 (rear screws)
Intended to look good with accessory Tube Fender Flares for Model 1, 2, 6, but it will fit with the standard fender flares.
The author hasn't provided the model origin yet.