Those are the dust caps. I believe the part number is 84953AG060 and it should be ~$7 each from the dealership. I would recommend putting the wires through the headlight grommet instead of the dust caps. Installation takes longer but it's a much cleaner look. I second buying from TheRetrofitSource.
DRLs will shorten the lifespan of the HID bulbs because DRLs cuts power to the low beam bulbs by like 90% which isn't enough power to properly run the HIDs
I bought these used off of someone and never installed them on my car so I don't have pics of them on my car. Here are some pics of H-Techs on some Legacys that I found on the internet.
Used with about 10,000 miles on them. Lowers 0.94" front and 0.87" rear. I'll get pictures if someone is interested.
Price: $130 picked up in Waterville between March 9 and March 16 or $150 shipped and paypaled.