I have to somewhat agree with samc... you should NOT be using HID light in any headlight housings (projector or reflector) that aren't designed for them. It's not just the aiming, it's the reflectors themselves. You have to remember these housings were designed for halogen, so that lower piece of chrome trim here, chrome trim there (which aren't aim-able), with a halogen bulb the reflection is negligible, but with brighter HIDs they're just a nuisance to other drivers and yourself in adverse weather conditions.
I once had 5000k HIDs in my WRX, even though the lights were aimed properly, you can see the light going up from the cutoffs, very evident when you drive up to a wall or garage door. This is the glare you're giving other drivers.
I admit it was hard to switch back to halogens since you can clearly see (see what I did there) the advantages. I've since replace the WRX with a Porsche that has stock HIDs and there's a huge difference with crisp cutoffs, better light spread, and visibility.