I did too. I ordered in a set of 2 Bosche halogen headlamps and the focusing of the beam was sharp and clearly defined compared to the cheap lamps. Much better lighting than was usually available on the shelves in Canada.
I replaced the headlight lenses with Cibie units, the bulbs with Osram HIRs and had a custom wiring harness with relays built for all above to get full power to the lights and take any significant electrical draw away from the headlight stalk.
I ran this setup for 6 months and then upgraded to 90 watt bulbs. I owned the night with a 9500 ft reflective range (on high beam). I had to be at work far out in the country (40 miles from the city limits) at mid-night. It was my objective to stun the wandering deer into submission n(for them not to move until I passed due to the intense light coming out of the darkness at 85 MPH on the 2 lane black top. It seemed to work (this was in the early 1980's).
I think it was a misguided market protectionist policy that thankfully was finally ended.
They thought that we would not over drive the head lights (speeding) by not allowing us to have better lighting Just like Porsche 930's & Trans Ams having 85 or 100 MPH speedometers in 1979:
Joan Claybrook, who served as administrator of the National Highway Traffic Safety Administration from 1977 to 1981 told CNN Business that she was "absolutely infuriated" by high-speed speedometers during her tenure.
So NHTSA issued a rule in 1979 that speedometers should not indicate speeds over 85 mph.
"The auto industry went berserk," Claybrook recalled. "I wouldn't budge. I laid my body on the line on this one."
Claybrook said that high-speed speedometers are dangerous and can lead to young people testing the limits of their cars.
"For 16 to 25-year-olds, they always want to test," Claybrook said. "It's very tempting to kids to challenge and go that higher speed."
Speedometers were redone to adhere to the 1979 rule. But this was short-lived.
The limitation was abolished once the Reagan administration took power and Claybrook exited. Now you know the thought process of the U.S. Auto safety geeks: make it more dangerous for them and they won't do it.