Don't. "HID kits" are widely available, but they are (all) illegal and dangerous. The only legitimate/safe/legal HID conversion is to install complete HID headlamp assemblies designed, built, tested, and certified as such. Halogen headlamps mustuse halogen bulbs.
An HID Xenon conversion kit is an aftermarket automobile headlight replacement system that will let a car owner swap out standard halogen headlights for LED headlights.
Yes, but the HID low beam headlight on the 2003 model was an option offered at time of original purchase of the car. However, one can add an aftermarket HID light conversion kit to a non-HID 350z after doing some research.
Most likely, you bought a replacement bulb that is lower in wattage than the old/stock headlight. So the light output is lower. If you want your headlight to look brighter, you might want to consider upgrade to an HID kit. It's becoming a lot more inexpensive these ways. They used to cost around $700USD. Check this out, they have free shipping too. http://www.carpart4u.com/autopart/XTUNE-HID-Conversion-Kit-10000K-9006-HB4-p-16050.html
Don't do it. "HID kits" are widely available, but they are (all) illegal and dangerous. The only legitimate/safe/legal HID conversion is to install complete HID headlamp assemblies designed, built, tested, and certified as such. Halogen headlamps mustuse halogen bulbs. If you're smart, you don't use aftermarket headlamps, either. Most aftermarket headlamps give much worse performance than new genuine (factory/original/stock) headlamps.
No
H1
A number of questions have been raised regarding the legality of HID headlights but well informed sites such Motor Field and HIDS 4 U offer a good selection of HID headlight kits which are both safe and legal.
http://www.coolbulbs.com/HID-VISUAL-HEADLIGHT-AIMING-PROCEDURE.pdf
You must buy the conversion kit unless you already have hid installed.
8,000K or 10,000K
H11
silverstar ultra or hid system......