Front bracket clamps onto the steering stem and holds this headlight
https://www.amazon.com/gp/product/B06XXKQ9RG/ref=ppx_yo_dt_b_asin_image_o00_s00?ie=UTF8&psc=1
and these turn signals
https://www.amazon.com/gp/product/B0972G7SYH/ref=ppx_yo_dt_b_asin_title_o00_s01?ie=UTF8&psc=1
Rear brackets hold the rear signals.
Print the parts and glue them together. The rear assembly uses the rear fender mounting holes.
You will need to tap the holes in the front truss for the clamp screws, they are sized for 8-32 screws.
The author hasn't provided the model origin yet.