The OE bulb on 98+ Contiques is actually a 3457NA. This is the replacement to the 3357NA. All the books at the stores have the wrong bulbs listed. A 3157 bulb will work but will not have as high of a lumen rating as the 3457. They do make a 3457LL (clear long life). I would suggest something like http://hyperbright.com which utilizes just the high wattage fillament and allows you to do away with the dimmer yellowish filament. There are other ways to achieve the same result. It looks good on our cars, IMHO.

HTH
John
jc-aimhigher@webtv.net