My tribar 5 3/4 headlight is still running fine with another 10K miles on it. But I like the stock headlight shell. You could always buy a regular aftermarket headlight like many on here have done and put the projector light in that, then mount it. You just have to put the wiring that's in the headlight up under the tank, which is not a big issue.
You can make this work. Once you get started, you find ways around the obstacles.