Will only offer a marginal improvement because your problem isn't the bulb (though a small four inch can not match a seven inch bulb despite what the stylist think. Halogen bulbs just extend the life of the bulb by condensing the metal that vaporizes back onto the element instead of darkening the mirrored reflector.
To make your lights brighter increase the voltage to the bulb. Measure your voltage at the bulb and it will read nine to eight volts, due to the drop across the resistance of the bulb coupled with low amperage and low voltage from your alternator. Newer alternators output more voltage and amperage (multiplied together you get Watts which is how bulbs are sold: for example yours are only 36 Watt bulbs, compared to a 60 or 100 Watt light bulb in your bathroom).
If you have an external regulator on your alternator tap into the wire that feeds the regulator located next to the Horn on the radiator core support for power. Without a draw the voltage regulator won't activate the alternator to make power. This is your battery terminal on the relay (solenoid) that is going to feed power to your lights./ You plug a wire into the old light harness (I just stick a blade terminal into the light socket) to sense when the light are on. Then run a separate wire to the negative terminal of the battery where it grounds the car body (the short small wire off of the battery cable).
That is how I would maximise power to the light or to power auxilary lights; like my 300,000 candle power CIBIE off road running lights that turns night into day; and burns the retina off any one who won't dim their high beams at night. (to quote Robert Kennedy: "Don't get mad, get even!")
No they are plug and play. I bought a set of vision headlights 5 3/4 and installed a set of pro performance LED bulbs and done. They cost me around 65bucks for the head lights (set 2) and i think about 160 set of 2 LEDs. Canadian bucks.