IMO not worth doing as you then can't run higher wattage bulbs but since you asked..
Bright box mod:
There is also a another mod you can do with a aftermarket harness that will allow the low beams to stay on with the high beams aka Bright Box that is sold for like $90, ya can do this with a aftermarket harness for about 50 CENTS!!!!!
All you need is a Diode, something about 1Amp and 12Volts or more, I got a 200V, 1A because that is what I could find in the Garage. What you do is you put it on the other STOCK Bulb Socket that isn't used in the Harness. What this will do is when the Highs are turned on, The power from the Highs will go from the High to the low and back thru the system to the other side that will turn on the relay for the new Harness to turn on the Lows also. Ya just have to make sure ya put the diode in right, and the reason to use a Diode is because if ya just had WIRE it would turn both highs and lows on at the same time all the time, ya need a diode for a one way circuit.
Make sure the direction of the Diode is from High to Low Circuit, It should look like this, on the drivers side socket, then ya can cover it in Electrical Tape or something so it can't contact metal