Totally, it costs a lot just to fit new bushes, bearings, ball joints and all the little parts like that which really do nee replaced on an old car that's been sitting for a while. I spent £20k more on my build than I thought I would before I bought it. All the little parts really add up.
Will all be worth it though.
These Z's get you hooked, already got a craving for a second one myself.