[J-440]

I have seen countless builds of all types of cars with c-fugal superchargers and am wondering...why are all of them on the driver side? I have more space on the passenger side of my car and within a year I will be looking at a purchase of a blower. If it is a bracket issue, can't they just be flipped around to adapt to the opposite side? I work in a machine shop so fabbing up some steel will not be a problem. Just curious.