1. all 4th gen bumpers come like this
2. you can buy factory fogs and they will fit inside (jdm / usdm same except color sometimes)
3. you already have the wiring for them but you will need a switch. want a switch, expect 150 bux for a real one.
4. owner couldn't have taken them out because you would have a switch in your car
5. the fogs need shrouds as well, expect some decent ones for $150
edit:
i searched and i came up with 2 pages worth of stuff. i read thru some of it and it would have answered your questions.
http://www.preludeonline.com/search....=oem+foglights