One of the first mods I will make for the 87 60 series will be the rear seat with headrests and I would also like to replace the lap belts. I've been reading some on the main site about the hole and the nut for installation of the seat belts. I can easily tell the hole is there but how do you find if the nut is present? Also where would you guys suggest for finding a rear seat with headrests and the seat belts? I've already gotten prices from Specter but just thought I would ask around locally.