Unfortunately, you really don't
want the super white LED color if you want the best light performance. The more yellow light of traditional halogens is easier for your eyes to use and adjust to at night, especially in bad weather. I know a lot of people think the white LEDs look better, but it's kind of a form over function thing. Most of the halogen bulbs that do reproduce that white color range accomplish it by coating the glass with a blue tint which reduces light output and potentially shortens the bulb lifespan. You're better off avoiding the blue coated bulbs all together in most situations. However there is one option with some blue coating I'm aware of that might be at least close to what you're looking for, Philips NightGuide Platinum halogens. They're the successor (at least in the USA) to the Philips X-tremeVision series (mentioned in the thread that RichLo linked), which also had some blue on the glass, but in this case it's not
entirely for cosmetic reasons. FWIU, Philips puts the blue coating in non-critical areas of the bulb glass on these to keep them within legal brightness specifications. In other words, they use that blue coating just to dim the bulbs down to a legal output level. They're still not going to look like the same color as most white LEDs, but they'll be closer than most halogens and the old X-tremeVisions they're replacing were long regarded as the brightest (legal) halogen bulb series on the market. The new NightGuide Platinums have more of the blue on the glass than the old X-tremeVisions did which kind of bummed me out, but it might produce a whiter light than the old X-tremeVisions. Here's a link to the NightGuide Platinums in 9006 (low beam).
www.amazon.com/dp/B099GJRN41
Yes, the 4-Hi mod is included in the harness that 5vortec7 makes.