I got pretty excited for a minute when I found these bulbs at O'Reilly's because I had not been able to find anything like this in the Sylvania online catalog. The only 9012 bulb they show as available is the Sylvania XtraVision, and I thought it would be nice if we could get these in the Silverstar (or better) lineup. It's great that it also serves as another name-branded option to the Philips 9012 HIR bulb currently available, and I believe the Silverstars should shoot a whiter light than the Philips bulbs which are essentially as yellow as stock (albeit significantly brighter). However, since I couldn't find these in the online catalog, I don't have any actual stats to back that up.
Several of you guys will already be aware that these 9012 HIR bulbs could make a real nice improvement because, in spite of the fact that they are still 55W bulbs and therefore safe to use in place of the stock 9006 low beams, they produce approximately 1800 lumens relative to the ~1000 lumen output of the Sylvania 9006 Silverstar Ultras I unfortunately just purchased (before I knew these existed).
It does take a small modification to the central tab which can easily be accomplished with a nail trimmer, as described here:
HIR bulb base modification
I've got both installed now, and once I go out in the dark, I'll give a quick update to see how bright / white they really are.