Since I didn't have a pilot bearing puller, I removed the flywheel to keep the grease off of it. The upper blue is a coolant bore plug; the lower blue is the cam bore plug; the green is the temperature sender for the gauge; and the yellow is the air check valve from the smog pump.
http://www.fourdoorbronco.com/board/showthread.php?t=5230 
![bareback.jpg Since I didn't have a pilot bearing puller, I removed the flywheel to keep the grease off of it. The upper blue is a coolant bore plug; the lower blue is the cam bore plug; the green is the temperature sender for the gauge; and the yellow is the air check valve from the smog pump.
[url=http://www.supermotors.net/registry/media/559836][img]http://www.supermotors.net/getfile/559836/thumbnail/freezeplug.jpg[/img][/url]
http://www.fourdoorbronco.com/board/showthread.php?t=5230](https://www.supermotors.net/getfile/72224/fullsize/bareback.jpg)