^What Dave says.
Put masking tape on all the emissions and vacuum hoses and label them with numbers, and then write down in a note pad where they go and/or put a corresponding piece of numbered tape on the destination/hook up spot. Get a big box of zip loc bags, and organize your hardware and random brackets and pieces into labeled bags. And take close up "before" pictures of everything before you dissemble and remove so that you can reference those pictures when something doesn't make sense.
1976 FJ40 - green and mostly stock
1996 FZJ80 - not so stock