Check these :
Rattle from rear door:
Dry rubber/plastics of rear door. Grease the plastic/rubber holders of the rear door AND where they touch the part mounted on the body.
Rattle/knocking from rear (noisy knocking on non-flat roads) :
Rubber fittings of OEM swaybar worn. No expensive part, just replace by OEM new ones.
Hyaku ichi !!If they don´t have a AE101 in heaven... I´M NOT GOING!!