The best procedure is to bring it to someone that has done this many times. The pump is driven off the chain, the cams must be marked and are a pain to reset properly, the chain is probably something to be replaced while it'* out and the guides too IIRC. BTW there'* no room in the engine bay to work on it.
Been there, helped on one before. And that was with a buddy that was ASE and Pontiac trained for them. Nasty critters, one of those jobs that it'* better to pay for someone to do it.
00 Regal GS: All kinds of cool stuff.