that's what i thought too, but that dude keeps insisting that there is a difference between them. i think that guy doesn't know what he's talking about....a d16y8 is a d16y8, there shouldn't be anydifferences between them. oh, this just popped in mind. the ex up in canada is an lx here, and their EL is an ex here, or something like that..i think that's what he's talking about. what a noob. my friend should've just ask him for a "d16y8 head" not an "ex head" lol. makes sense now!