I upgraded the lighting in my 68 442. I also upgraded to ralley gauges. I bought holley retro brights and some amazon gauge bulbs for $12. I think aftermarket gauges have a white bucket where as the stock speedo has a blue bucket. Its nowhere near as a noticable difference in color in person. This is normal low beam too

WHAT A DIFFERENCE !! i can finally see where im going at night and how fast lol

 

Nice updates. I've got H4 housings & bulbs with an upgraded wiring harness with relays... but I'm still willing to get the Retro bright bulbs in the future. They aren't cheap, but just doing the outboard low/high beams would make a significant difference.