Generally speaking, currently, HID kits are best suited for projector headlight retrofit, and LED kits are best suited for reflector headlight retrofit. This also explains why, with the factory projector headlights, the consensus recommendation is to put the HID kit in the projector light assemblies, in the low beam position, and then an LED kit in the high beam position, as the high beam bulb still uses a reflector.
That said, LED kits are getting better, and I do believe we will see a quality LED low beam kit that will work close to as well as the HID kit offerings, in the near future. Currently the light output from an HID kit is simply well above that of an LED in the projector type headlight.
The problem you will likely encounter if you choose to install an HID low beam headlight conversion kit in your projector style headlight is that - you will have to:
A) drill a hole in the back of your headlight assembly bulb dust covers
Or
B) buy replacement headlight assembly bulb dust covers - already drilled and ready for the HID bulb kit (about $60.00/pair)
Or
C) remove the headlight bulb dust covers and leave off (NOT a great idea but some do this)
The HID bulbs themselves will fit fine, but in most cases the additional hardware in the HID kit = the ballast, and additional parts like canbus decoders or error cancellers, will not fit inside the headlight housing under the dust cover, and must be mounted and secured outside the headlight assembly.
Canbus decoders or error cancellers may not be needed in some current super smart kits, or if you choose to reprogram your truck, using a tool such as the very popular AlphaObd app/tool.
If there is a decent HID kit that will completely install inside the headlight assembly, with the factory dust cover installed, unaltered, someone will be along shortly to post the applicable kit(s).
Happy hunting - there is a tremendous amount of information in previous postings for you to search through and read through at your leisure, on the subject of which HID or LED headlight bulb kit is the best, including several Ram Forum supporting members.