Thanks a lot for the reply.
I think that if both the owner's manual and Sylvania say H16 then that's what I'll go with. The last time I bought a pair of low beams via Amazon, it said they would fit. But they did NOT fit.
You're right about the Philips link. But what's even weirder is that I checked each set the search produced, and found that the size varies based on which particular grade of bulbs one chooses (HUH?!?). One even says that it replaces H7, H8/H16, H11, 9006, 9145, and PS24W. Some of them appear to attach at the rear, and some at the side -- so I know some of them can't be correct.
Well, I'll buy a pair of H16s and just keep my fingers crossed.
Thanks again for replying!