JR2, redneckdr is correct, the Sport headlights on '99 through '01. 5 Rams are not HID.
I am using the "special" Brite-Box for the Sport headlight upgrade ('94 through '98. 5 application) therefore, I have both filaments of the 9007s and one filament of each 9004 lit when high beam is activated. I was worried about premature 9007 bulb burnout because of this however, I have not experienced this so far. In my defense, I do not drive with the high beams on for a prolonged period of time (don't need to) and I always make sure I'm in motion over say, 20 mph (for headlight cooling).
Another tip for bulb longevity, I never turn off the ignition before I turn off my headlights. Likewise, I never turn on my headlights before I have started my engine.
redneckdr, the non-Sport marker light assemblies (heavily fluted lenses) do not have to be changed when upgrading to Sport headlights although, they will look out of place when next to the (non-fluted lenses) of the Sport headlights. The Sport headlight assemblies are no wider than the standard (single bulb) headlight assemblies. Additionally, the sheet metal behind the headlight assemblies only has to be removed for Sport headlight clearance on '94 through '98. 5 Rams (that applies to ALL SLT and Sport models). All '99+ Rams have the appropriate sheet metal removed for the Sport headlights. Details of the Sport headlight upgrade were outlined (with pics) by Scott Dalgleish in a previous issue of the TDR (issue 22 I believe)... "Second Time Around" (Project2Timer). However, if you use the article Scott wrote as a guide be fore warned that the Sport headlight part numbers are somewhat incorrect. By that I mean, the numbers listed are for the Sport headlight assemblies only. It's quite a bit cheaper to purchase the complete Sport headlight assemblies (separate part price comparison) which consist of: Sport headlight (including 9007 and 9004 halogen bulbs, bulb retaining rings, and breathers), Sport marker light (no bulb), and the mounting frame. This particular part number is what the dealer/body shop would use if the vehicle had been in a front end collision. I don't have the part numbers in front of me at this time however, I'm sure someone will post them before I get a chance to post again.