The victim-ahem-beneficiary of some stealth lighting: My '58 Impala Sport coupe. This car is a daily driver, and in the wet and dark Northwest, good lighting is a must. Immediately after obtaining this car seven years ago, I swapped out the old dim T3 low and high beam lights for the more contemporary H4 halogen headlights.
They put out quite a bit more candle power, but the flat glass lens and modern fluting doesn't look right on this car. So what is a hot rodder to do in pursuit of traditional looks but with a need for bright and safe lights? Solution: Install the T3 lenses on the H4 halogen reflectors.
Though not a direct conversion per se (actual halogen conversion kits do exist), the swap is rather straightforward, and the results speak for themselves by providing a better lit road when you're behind the wheel.
