To give you a tip: I've took a piece of metal, made it to fit my ballasts, drilled the holes, and mounted it under the upside of the grille, so it's parrallel with the radiator and in front of it. Place back the cover and tadaa... where are your ballasts now?
The whole thing (excepts balasts ofcourse) are painted black

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<img src='http://members.home.nl/vincentkoeter/bmwsignew.jpg' border='0' alt='user posted image' />
22 Years Old
Lives in the Netherlands
'95 328i ///M, 200k KM
3.15LSD / M3 euro exhaust (spaghetti manifold) / M50 intake manifold soon to come
0-100km/h in 6.6 sec