Per Federal law, retrofits are not legal (circa 2001 NHTSA ruling) but not often enforced by police.
OEM HID systems are available for European spec Renegades but not made available for US (maybe in the coming years as mid-product-cycle updates?)
I've yet to see anyone try to order the OEM kit to try to retrofit on their US spec cars. I suspect, because of the use of CANBUS on all things electronic in the vehicle, the retrofit will be a costly nightmare.
Unless the factory halogen lighting is sub-par to you, leave it alone and wait for more knowledge to come to light or for the aftermarket to catch up.
Avoid wasting your money on snake oil bulbs that claim Xenon-like performance. Especially the ones that are coated blue. Those only look whiter, but if you examine the science, you are actually putting out less light. In brief, the coating acts as a filter. It allows light from the blue spectrum to pass, not the rest. They change color of the light, but do not in anyway increase light output.
The only type of halogen bulb that I know of that is scientifically proven to provide Xenon/HID level light are HIR bulbs. These bulbs use fine specks of metal in the glass globe to super heat the filament to produce more light output than a conventional halogen bulb. The trade off is shorter bulb life. This technology was first introduced and used in the first generation Dodge Viper.
I had a set of HIRs in my Honda Element. Light output was excellent, but they lasted only a year. They're also more expensive.
I'm weary of the plethora of LED conversion kits out there. There is no telling how good their construction or engineering is. With parabolic reflector light housings, placement of the light source is critical for optimal performance. Many of these kits are made cheaply in China, where quality control and engineering is... you guessed it: anyone's guess.