Unfortunately, Minnesota (and I think a lot of other states) have strict limits to what lights you can run on public roads. it is illegal to have more than 4 auxiliary lamps lighted on at any one time on public roads (169.63b). And there is a maximum candlepower (169.56c). No added lights can be over 42" above the roadway and there is a limit to how far forward they can project(169.56).Based upon my experience on and off road I would focus on installing auxiliary lights verses upgrading the existing halogens . . .