Suzuki DRZ400 speed sensor conversion

Mechanical speedo has failed on my RZ400 so I've bought cheap universal speedometer from ali. It cames with 12mm hall sensor and 2 magnets to attach to the brake rotor. I did not liked the idea that something will stick out of brake caliper so I've decided to reuse original speedo gear housing and designed this thing. This adapter will convert mechanical speedo to digital one. Print it and glue 4 magnets (D8mmx2.7mm) with epoxy. Use spacer to position hall sensor in place and seal it with silicone.