Just got e-codes installed . . . 

Thinking about fog lights - maybe round above bumper. . . rect below . . . yellow colored bulbs . .  was looking at Cibie - - - noticed they have HID lights . . like you could install these . . . . so now I'm wondering about two cibie fog lights yellow bulbed and two cibie hid lights, driving lights, all installed . . . . that would be something . . . . 

Is there a reason why sometimes I see fog lights installed so closely together . . . I know its good when they are lower, I know its an advantage when their light is yellow-ish . . . 

So if all were round and attached on top of the bumper (could be below, but maybe they'd get bottomed out like my spoiler used to . . . ) - I imagine the HIDs would be better on the outer, and the fogs on the 'inner' (FOIL - if you remember your elementary algebra)

And am I correct that H4 bulbs are the same as 9003 bulbs (whereas the original vanagon bulbs are 9004 . . .) - thanks . . . .