well i mean the sylvania silver star ultra's are around $40 if i remember right. an hid kit from www.vvme.com is $80 shipped. and just fyi, silverstars seem to burnout quick.
Yeah, for $40 more you can get a decent HID conversion kit. Don't waste your money on Silverstars as you won't really notice a big difference between Silverstars and regular Sylvania halogen bulbs.
Headlight choices are up to you. You can go with new reproduction factory headlamps from 50resto.com , and they're pretty cheap. Or if you want clear/diamond headlamps, check out ebay. I got my diamond/ultra clear headlamps from a seller on eBay... The quality was real good with no fogging issues, and i paid about $75 shipped to my door.
The factory GT fog lights suck on our cars. Even with brighter bulbs, you won't really notice a big difference. I had Luminics Ultra White bulbs in my fogs, and they didn't make a noticeable difference over the stock halogen foglight bulbs. So i ended up getting a HID kit for the fogs too.... big difference.
Overall, check out 50resto.com for new stock replacement headlight/foglight assemblies.
Check out ebay for the best deal on Cobra style/ultra clear lamps.