the s2k's are not the smallest projectors in the world. they look small but 80% of it is hidden behind the housing, take it out and it'll cover the entire low beam and a portion of the highs in our housings. and yes there is such thing as crappy HID's. examples are the cheap chiwainese brands and cars with OEM reflectors with HID bulbs crammed into them. BTW... HID kits are illegal as of last year. I wouldnt purchase them unless you want the law all over your ass!