Stillen=More expensive, Genuine K&N Filter, CARB certified.
JWT=cheaper, generic filter (last I checked), not CARB certified.
In other words, if you are not worried about, or are going to remove the cone filter for inspections and smog checks, go with the JWT to save a bit of money. There will be no HP difference, so pick your poison!
Lots of people like the Phillips BV bulbs. I haven't tried them personally, so that's about all the info I can pass on there.
Good luck, and keep that mod bug alive!
