Dude as cool as those TYC HIDs are, Just buy a Kit and put them in your stock housing. Seriously. Its not as bad as people make them out to be. I have run HIDs in my stock housings for ever and only been flashed twice. Once cause I really did forget my brights were on and the other was in my yukon before I aimed them. Get a 9006 for the lows and 9005 for the highs, and be done.
since you have a yukon denali your options for headlights are not as good if you had a regular yukon or tahoe (in 01 they got projectors so that made them better low beams, but your your gen (gmt 400) denali, theres nothing better than the stock ones. If you get 4300 or 5000k they dont blind as much, and here 4300k HIDS are legal whether their stock or not I found out in traffic court, so thats my source.