Technically, one should be able to detect a proportional increase of 8% (min) when it comes to brightness of light - according to the Weber Fraction for light stimulus discrimination. Good luck finding 48.6/70.2W bulbs, though...

But seriously, Donald, for those of us that can't afford Euro headlamps yet, can you give some detailed instructions on how to rewire the lamps to handle the increased wattage? And the relays - availability/ ease of installation? Obviously not much of an electrician here...

Thanks a bunch - and happy holidays to all!
-Nick