Originally Posted By: 901Memphis
Your car uses a 9006 low beam, the best upgrade would be a tab mod Phillips 9012LL bulb.
I disagree, given that the vehicle is an older Grand Marquis with plastic lens optics... These older headlamps don't have the tight optical control that newer lamp designs have, and I believe that a 9012/HIR2 bulb could prove to be too bright in the housing, creating too much glare (especially if we're dealing with ANY lens cloudiness here). In general, I think the Sylvania Xtravision offers the best bang-for-the-buck. The only caveat is these bulbs are sometimes made in China or Thailand in this 9006/HB4 application. But that's apparently true of other choices as well (like Philips Vision Plus, etc).