9006 is a single filament bulb, low beam.
9007 is a dual filament bulb, low and high beam.
If you use that bulb, you will have to figure out how to wire it up yourself, and you will only have a single beam.
Dual beam 9007 HID bulb replacements move the bulb slightly to work in high and low beam positions. A 9006 bulb's light source will be where the 9007 sits on high beams.
Also, plug and play HIDs in a stock halogen housing are stupid, blind other drivers, and DO NOT make it so you can see better. I could go into a long rant about optics and such, then say something about, "just because cops don't pull you over and people don't flash their headlights at you blah blah blah", but I am not going to. I've done it a dozen other times, and it never stops anyone from being stupid and using those.
Those PnP HIDs will make your truck look cheap, and no matter how much extra foreground light you get, and how hard you try and convince yourself, you will not have more visibility. If you want to put HIDs in your truck, either get aftermarket projector housings at a bare minimum, or retrofit a real HID projector into your headlights. There are threads in the Performance Lighting section that will tell you how to do it.