Be ready to have heavy duty torx bits for the seat belt mounts. I broke two while disassembling. Have that and a big breaker bar, PB blaster and patience (and beer).
Otherwise, the rest is a cake walk.
I gutted mine simply because I have no kids and I wanted the extra room to haul stuff around (mainly music gear when I was playing shows frequently). I also built a floor with a door that goes to the spare tire well.
Also, keep everything! Trying to reclaim all of that stuff from junk yards, etc. is a nightmare!
2004 ZX3 - Twighlight Blue_____________________________________ _ _ _ _ _ _