The strange bolts are bolts that have the heads sheared off as they are tightened (so they can't normally be removed). Take a Dremel with cutting disc and cut a slot in the middle of rounded head. Use a big screwdriver to remove bolt. You tighten them back up that way.
- - - - TR7 Spider - - - - - - - - 1978 Spitfire - - - - - - 1976 Spitfire - - 1988 Tercel 4X4 - Kali on Integra - 1991 Integra - - Yellow TCT