Gauges are never going to work. Its not just wiring them in, aside from the immobilizer issue the streetfighter dash has its own integrated ECM which runs all of the functions controlled by the handlebar switches. In addition the speedo and such as well as many of the engine sensors tie into the dash before running to the ECU. I have completed a lot of projects that people have said were too difficult or not worth it but that dash swap is much more than just re-wiring it.
Headlight should be easy enough though
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