You can buy a Haynes Manual and it will have the information you need.
try autozone.com
haynes.com
305 5.0 liter
You can find a diagram of the fuse box in an 87 Land Cruiser in the vehicle's owner's manual. You can also find it in auto part stores.
no
Doors from a 1978-87 El Camino or GMC Caballero
If you go to Auto Zone or some other auto parts store, You can get a HAYNES REPAIR MANUEL, That has the wiring diagram in the back of the book.
Any 1978-87 El Camino or GMC Caballero
Try nada.com
87 octane
1959-60, 1964-87
205- 70R -15.