Yes...pretty much. Your best bet is to by a wiring harness that will just clip on to your factory plugs so you don't have to butcher those. Sometimes the OEM sub amp can cause trouble...but for just a head unit install, usually it's fine. Do a search in the 80 series forum about stereos...there's a bunch of info there.
well your new unit should have a wiring harness come with it.
Match the colors of wires to the ones in your truck.
solder them together.
Honestly it was my first time ever doing one and it was easy.
Its pretty straight forward.